GIGABYTE B550 UD AC Motherboard User Guide

GIGABYTE B550 UD AC Motherboard

Product Information

• Specifications
  • CPU: AMD Socket AM4, support for AMD RyzenTM 5000 Series Processors/ AMD RyzenTM 5000 G-Series Processors/ AMD RyzenTM 4000 G-Series Processors/ AMD RyzenTM 3000 G-Series Processors/ AMD RyzenTM 3000 Series Processors
  • Chipset: AMD B550
  • Memory: Supports DDR4
  • Graphics: Integrated Graphics Processor with AMD RadeonTM Graphics support – 1 x HDMI port, supporting a maximum resolution of 4096×2160@60 Hz
  • Audio: High Definition Audio
  • LAN: Gigabit Ethernet
  • Wireless: Wi-Fi module
  • Expansion Slots: Various PCIe and M.2 slots are available

Product Usage Instructions

• Identifying Your Motherboard Revision
  • The revision number on your motherboard looks like this: REV: X.X. For example, REV: 1.0 means the revision of the motherboard is 1.0.
  • Check your motherboard revision before updating motherboard BIOS, and drivers, or when looking for technical information.
• Chapter 1: Product Introduction
  • Motherboard Layout
  • The motherboard layout includes components and connectors such as USB ports, fan headers, SATA ports, M.2 slots, audio ports, PCI Express slots, and more.
• Chapter 2: Hardware Installation
  • Installation Precautions
  • Before installation, it is important to follow these precautions to prevent damage to the delicate electronic circuits and components:
  • Read the user’s manual carefully.
  • Avoid electrostatic discharge (ESD) by grounding yourself and using an anti-static wrist strap.

Product Introduction

Motherboard Layout

Hardware Installation

Installation Precautions

The motherboard contains numerous delicate electronic circuits and components that can become damaged as a result of electrostatic discharge (ESD). Before installation, carefully read the user’s manual and follow these procedures:

• Before installation, make sure the chassis is suitable for the motherboard.
• Before installation, do not remove or break the motherboard S/N (Serial Number) sticker or warranty sticker provided by your dealer. These stickers are required for warranty validation.
• Always remove the AC power by unplugging the power cord from the power outlet before installing or removing the motherboard or other hardware components.
• When connecting hardware components to the internal connectors on the motherboard, make sure they are connected tightly and securely.
• When handling the motherboard, avoid touching any metal leads or connectors.
• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic components such as a motherboard, CPU or memory.
• If you do not have an ESD wrist strap, keep your hands dry and first touch a metal object to eliminate static electricity.
• Before installing the motherboard, please have it on top of an antistatic pad or within an electrostatic shielding container.
• Before connecting or unplugging the power supply cable from the motherboard, make sure the power supply has been turned off.
• Before turning on the power, ensure the power supply voltage has been set according to the local voltage standard.
• Before using the product, please verify that all cables and power connectors of your hardware components are connected.
• To prevent damage to the motherboard, do not allow screws to come in contact with the motherboard circuit or its components.
• Make sure there are no leftover screws or metal components placed on the motherboard or within the computer casing.
• Do not place the computer system on an uneven surface.
• Do not place the computer system in a high-temperature or wet environment.
• Turning on the computer power during the installation process can lead to damage to system components as well as physical harm to the user.
• If you are uncertain about any installation steps or have a problem related to the use of the product, please consult a certified computer technician.
• If you use an adapter, extension power cable, or power strip, consult with its installation and/or grounding instructions.

Product Specifications

(Note) For AMD Ryzen™ 5000 Series/3000 SeriesProcessors only.

Please visit the SERVICE/SUPPORT\Utility page on GIGABYTE’s website to download the latest version of apps. https://www.gigabyte.com/Support/Utility/Motherboard?m=ut.

Installing the CPU
Read the following guidelines before you begin to install the CPU:

• Make sure that the motherboard supports the CPU. (Go to GIGABYTE’s website for the latest CPU support list.)
• Always turn off the computer and unplug the power cord from the power outlet before installing the CPU to prevent hardware damage.
• Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly.
• Apply an even and thin layer of thermal grease on the surface of the CPU.
• Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and damage of the CPU may occur.
• Set the CPU host frequency in accordance with the CPU specifications. It is not recommended that the system bus frequency be set beyond hardware specifications since it does not meet the standard requirements for the peripherals.
• If you wish to set the frequency beyond the standard specifications, please do so according to your hardware specifications including the CPU, graphics card, memory, hard drive, etc.

Installing the CPU
Completely lift up the CPU socket locking lever. Locate the pin one (denoted by a small triangle) of the CPU socket and the CPU. Once the CPU is positioned into its socket, place one finger down on the middle of the CPU, lowering the locking lever and latching it into the fully locked position.

Do not force the CPU into the CPU socket before the CPU socket locking lever is lifted up, or damage to the CPU and CPU socket may occur.
Please visit GIGABYTE’s website for details on hardware installation. https://www.gigabyte.com/WebPage/210/quick-guide.html?m=sw.

Installing the Memory
Read the following guidelines before you begin to install the memory:

• Make sure that the motherboard supports the memory. It is recommended that memory of the same capacity, brand, speed, and chips be used.
• (Go to GIGABYTE’s website for the latest supported memory speeds and memory modules.)
• Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.
• Memory modules have a foolproof design. A memory module can be installed in only one direction. If you are unable to insert the memory, switch the direction.

Dual Channel Memory Configuration

• This motherboard provides four memory sockets and supports Dual Channel Technology. After the memory is installed, the BIOS will automatically detect the specifications and capacity of the memory. Enabling Dual
• Channel memory mode will double the original memory bandwidth.
• The four memory sockets are divided into two channels and each channel has two memory sockets as following:
  • Channel A: DDR4_A1, DDR4_A2
  • Channel B: DDR4_B1, DDR4_B2

Recommended Dual Channel Memory Configuration:

| DDR4_A1| DDR4_A2| DDR4_B1| DDR4_B2
---|---|---|---|---
2 Modules| – –| DS/SS| – –| DS/SS
4 Modules| DS/SS| DS/SS| DS/SS| DS/SS

(SS=Single-Sided, DS=Double-Sided, “- -“=No Memory) Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.

1. Dual Channel mode cannot be enabled if only one memory module is installed.
2. When enabling Dual Channel mode with two or four memory modules, it is recommended that memory of the same capacity, brand, speed, and chips be used.
3. When installing a single memory module, we recommend that you install it in the DDR4_ A2 or DDR4_B2 socket.

Installing an Expansion Card

Read the following guidelines before you begin to install an expansion card:

• Make sure the motherboard supports the expansion card. Carefully read the manual that came with your expansion card.
• Always turn off the computer and unplug the power cord from the power outlet before installing an expansion card to prevent hardware damage.

Follow the steps below to correctly install your expansion card in the expansion slot.

1. Locate an expansion slot that supports your card. Remove the metal slot cover from the chassis back panel.
2. Align the card with the slot, and press down on the card until it is fully seated in the slot.
3. Make sure that the expansion card is fully seated in its slot.
4. Secure the card’s metal bracket to the chassis back panel with a screw.
5. After installing all expansion cards, replace the chassis cover(s).
6. Turn on your computer. If necessary, go to BIOS Setup to make any required BIOS changes for your expansion card(s).
7. Install the driver provided with the expansion card in your operating system.

Back Panel Connectors

• A. USB 2.0/1.1 Port
  • The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices.
• B. SMA Antenna Connectors (1T1R)
  • Use this connector to connect an antenna.
  • Tighten the antennas to the antenna connectors and then aim the antennas correctly for better signal reception.
• C. HDMI Port (Note 1)
  • The HDMI port is HDCP 2.3 compliant and supports Dolby TrueHD and DTS HD Master Audio formats.
  • It also supports up to 192KHz/24bit 7.1-channel LPCM audio output.
  • You can use this port to connect your HDMI-supported monitor.
  • The maximum supported resolution is 4096×2160@60 Hz, but the actual resolutions supported are dependent on the monitor being used.
  • After installing the HDMI device, make sure to set the default sound playback device to HDMI. (The item name may differ depending on your operating system.)
• D. USB 3.2 Gen 2 Type-A (Note 2)/USB 3.2 Gen 1 Port (Red)
  • The USB 3.2 Gen 2 (Note)/USB 3.2 Gen 1 port supports the USB 3.2 Gen 2 specification and is compatible to the USB 3.2 Gen 1 and USB 2.0 specification. Use this port for USB devices.
• E. USB Type-C® Port
  • The reversible USB port supports the USB 3.2 Gen 1 specification and is compatible to the USB 2.0 specification. Use this port for USB devices.
• F. Q-Flash Plus Button (Note 3)
  • Q-Flash Plus allows you to update the BIOS when your system is off (S5 shutdown state). Save the latest
  • BIOS on a USB thumb drive and plug it into the Q-Flash Plus port, and then you can now flash the BIOS automatically by simply pressing the Q-Flash Plus button.
  • The QFLED will flash when the BIOS matching and flashing activities start and will stop flashing when the main BIOS flashing is complete.
• G. RJ-45 LAN Port
  • The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate.
  • The following describes the states of the LAN port LEDs.

Speed LED:

Activity LED:

• (Note 1) For AMD Ryzen™ 5000 G-Series/4000 G-Series/3000 G-Series Processors only.
• (Note 2) For AMD Ryzen™ 5000 Series/3000 Series Processors only.
• (Note 3) To enable the Q-Flash Plus function please visit the “Unique Features” webpage of GIGABYTE’s website
• H. USB 3.2 Gen 1 Port
  • The USB 3.2 Gen 1 port supports the USB 3.2 Gen 1 specification and is compatible with the USB 2.0 specification. Use this port for USB devices.
• I. USB 3.2 Gen 1 Port (Q-Flash Plus Port)
  • The USB 3.2 Gen 1 port supports the USB 3.2 Gen 1 specification and is compatible with the USB 2.0 specification.
  • Use this port for USB devices. Before using Q-Flash Plus (Note 3), make sure to insert the USB flash drive into this port first.
• J. Line In/Rear Speaker Out (Blue)
  • The line in Jack. Use this audio jack for line-in devices such as an optical drive, walkman, etc.
• K.  Line Out/Front Speaker Out (Green)
  • The line out Jack.
• L. Mic In/Center/Subwoofer Speaker Out (Pink)
  • The Mic in Jack.

Audio Jack Configurations:

You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings. Please visit GIGABYTE’s website for details on configuring the audio software. https://www.gigabyte.com/WebPage/697/realtek897-audio.html.

• When removing the cable connected to a back panel connector, first remove the cable from your device and then remove it from the motherboard.
• When removing the cable, pull it straight out from the connector. Do not rock it side to side to prevent an electrical short inside the cable connector.

Internal Connectors

Read the following guidelines before connecting external devices:

• First make sure your devices are compliant with the connectors you wish to connect.
• Before installing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.
• After installing the device and before turning on the computer, make sure the device cable has been securely attached to the connector on the motherboard.

ATX_12V/ATX (2×4 12V Power Connector and 2×12 Main Power Connector)

• With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design. Connect the power supply cable to the power connector in the correct orientation.
• The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start.
• To meet expansion requirements, it is recommended that a power supply that can withstand high power consumption be used (500W or greater). If a power supply is used that does not provide the required power, the result can lead to an unstable or unbootable system.

ATX_12V:

ATX:

Pin No.| Definition| Pin No.| Definition
1| 3.3V| 13| 3.3V
2| 3.3V| 14| -12V
3| GND| 15| GND
4| +5V| 16| PS_ON (soft On/Off)
5| GND| 17| GND
6| +5V| 18| GND
7| GND| 19| GND
8| Power Good| 20| NC
9| 5VSB (stand by +5V)| 21| +5V
10| +12V| 22| +5V
11| +12V (Only for 2×12-pin ATX)| 23| +5V (Only for 2×12-pin ATX)
12| 3.3V (Only for 2×12-pin ATX)| 24| GND (Only for 2×12-pin ATX)

CPU_FAN/SYS_FAN1/2/3 (Fan Headers)

• All fan headers on this motherboard are 4-pin. Most fan headers possess a foolproof insertion design.
• When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is the ground wire). The speed control function requires the use of a fan with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed inside the chassis.

CPU_OPT (Water Cooling CPU Fan Header)

• The fan header is 4-pin and possesses a foolproof insertion design. Most fan headers possess a foolproof insertion design.
• When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is the ground wire).
• The speed control function requires the use of a fan with fan speed control design.

• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating may result in damage to the CPU or the system may hang.
• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers.

D_LED1/D_LED2 (Addressable LED Strip Headers)
The headers can be used to connect a standard 5050 addressable LED strip, with a maximum power rating of 5A (5V) and a maximum number of 1000 LEDs.

Connect your addressable LED strip to the header. The power pin (marked with a triangle on the plug) of the LED strip must be connected to Pin 1 of the addressable LED strip header. Incorrect connection may lead to the damage of the LED strip

LED_CPU (CPU Cooler LED Strip/RGB LED Strip Header)
The header can be used to connect a CPU cooler LED strip or a standard 5050 RGB LED strip (12V/G/R/B), with maximum power rating of 2A (12V) and maximum length of 2m.

Connect the CPU cooler LED strip/RGB LED strip to the header. The power pin (marked with a triangle on the plug) of the LED strip must be connected to Pin 1 (12V) of this header. Incorrect connection may lead to the damage of the LED strip.

LED_C1/LED_C2 (RGB LED Strip Headers)
The headers can be used to connect a standard 5050 RGB LED strip (12V/G/R/B), with maximum power rating of 2A (12V) and maximum length of 2m.

Connect your RGB LED strip to the header. The power pin (marked with a triangle on the plug) of the LED strip must be connected to Pin 1 (12V) of this header. Incorrect connection may lead to the damage of the LED strip.

• For how to turn on/off the lights of the LED strip please visit the “Unique Features” webpage of GIGABYTE’s website.
• Before installing or removing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.

SATA3 0/1/2/3 (SATA 6Gb/s Connectors)

• The SATA connectors conform to SATA 6Gb/s standard and are compatible with SATA 3Gb/s and SATA 1.5Gb/s standard. Each SATA connector supports a single SATA device. The SATA connectors support
• RAID 0, RAID 1, and RAID 10. Please navigate to the “Configuring a RAID Set” page of GIGABYTE’s website for instructions on configuring a RAID array.

M2A_CPU/M2B_SB (M.2 Socket 3 Connectors)

• The M.2 connectors support M.2 SATA SSDs or M.2 PCIe SSDs and support RAID configuration.
• Please note that an M.2 PCIe SSD cannot be used to create a RAID set either with an M.2 SATA SSD or a SATA hard drive.
• Please navigate to the “Configuring a RAID Set” page of GIGABYTE’s website for instructions on configuring a RAID array.

Follow the steps below to correctly install an M.2 SSD in the M.2 connector.

• Step 1: Locate the proper mounting hole based on the length of your M.2 SSD drive. If needed, move the standoff to the desired mounting hole. Insert the M.2 SSD into the M.2 connector at an angle.
• Step 2: Press the M.2 SSD down and then use the included screw to secure it in the connector.

F_PANEL (Front Panel Header)
Connect the power switch, reset switch, speaker, chassis intrusion switch/sensor and system status indicator on the chassis to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables.

PLED/PWR_LED (Power LED, Yellow/Purple):

• Connects to the power status indicator on the chassis front panel. The LED is on when the system is operating. The LED is off when the system is in S3/S4 sleep state or powered off (S5).

PW (Power Switch, Red):

• Connects to the power switch on the chassis front panel.
• You may configure the way to turn off your system using the power switch (please navigate to the “BIOS Setup” page of GIGABYTE’s website and search for “Settings\Platform Power” for more information).

SPEAK (Speaker, Orange):

• Connects to the speaker on the chassis front panel. The system reports system startup status by issuing a beep code. One single short beep will be heard if no problem is detected at system startup.

HD (Hard Drive Activity LED, Blue):

• Connects to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data.

RES (Reset Switch, Green):

• Connects to the reset switch on the chassis front panel. Press the reset switch to restart the computer if the computer freezes and fails to perform a normal restart.

CI (Chassis Intrusion Header, Gray):

• Connects to the chassis intrusion switch/sensor on the chassis that can detect if the chassis cover has been removed. This function requires a chassis with a chassis intrusion switch/sensor.

NC (Orange):

• No connection.
• The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc.
• When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assignments are matched correctly.

F_AUDIO (Front Panel Audio Header)

• The front panel audio header supports High Definition audio (HD).
• You may connect your chassis front panel audio module to this header.
• Make sure the wire assignments of the module connector match the pin assignments of the motherboard header.
• Incorrect connection between the module connector and the motherboard header will make the device unable to work or even damage it.

Some chassis provide a front panel audio module that has separated connectors on each wire instead of a single plug. For information about connecting the front panel audio module that has different wire assignments, please contact the chassis manufacturer.

F_U32 (USB 3.2 Gen 1 Header)
The header conforms to USB 3.2 Gen 1 and USB 2.0 specification and can provide two USB ports. For purchasing the optional 3.5″ front panel that provides two USB 3.2 Gen 1 ports, please contact the local dealer.

F_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports via an optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.

Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord from the power outlet to prevent damage to the USB bracket.

TPM (Trusted Platform Module Header)

• You may connect a TPM (Trusted Platform Module) to this header.

CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults. To clean rthe CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds.

• Open: Normal
• Short: Clear CMOS Values

Always turn off your computer before clearing the CMOS values. After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or manually configure the BIOS settings (please navigate to the “BIOS Setup” page of GIGABYTE’s website for more information).

BAT (Battery)
The battery provides power to keep the values (such as BIOS configurations, date, and time information) in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low level, or the CMOS values may not be accurate or may be lost.
You may clear the CMOS values by removing the battery:

1. Turn off your computer and unplug the power cord.
2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal object like a screwdriver to touch the positive and negative terminals of the battery holder, making them short for 5 seconds.)
3. Replace the battery.
4. Plug in the power cord and restart your computer.
   • Always turn off your computer and unplug the power cord before replacing the battery.
   • Replace the battery with an equivalent one. Damage to your devices may occur if the battery is replaced with an incorrect model.
   • Contact the place of purchase or local dealer if you are not able to replace the battery by yourself or uncertain about the battery model.
   • When installing the battery, note the orientation of the positive side (+) and the negative side (-) of the battery (the positive side should face up).
   • Used batteries must be handled in accordance with local environmental regulations.

F_U32C (USB Type-C® Header, with USB 3.2 Gen 1 Support)
The header conforms to USB 3.2 Gen 1 specification and can provide one USB port.

BIOS Setup

BIOS (Basic Input and Output System) records the hardware parameters of the system in the CMOS on the motherboard. Its major functions include conducting the Power-On Self-Test (POST) during system startup, saving system parameters and loading operating system, etc. BIOS includes a BIOS Setup program that allows the user to modify basic system configuration settings or to activate certain system features. When the power is turned off, the battery on the motherboard supplies the necessary power to the CMOS to keep the configuration values in the CMOS. To access the BIOS Setup program, press the key during the POST when the power is turned on. To upgrade the BlOS, use either the GIGABYTE Q-Flash or @BIOS utility.

• Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating system.
• @BIOS is a Windows-based utility that searches and downloads the latest version of BIOS from the Internet and updates the BIOS. For instructions on using the Q-Flash and @BIOS utilities, please navigate to the “Unique Features” page of GIGABYTE’s website and search for “BIOS Update Utilities.” A Because saine mended hat you not da note cou. To roas i sings, i vent version of BIOS, it is recommended that you not flash the BIOS. To flash the BIOS, do it with caution. Inadequate BIOS flashing may result in system malfunction.
• It is recommended that you not alter the default settings (unless you need to) to prevent system instability or other unexpected results. Inadequately altering the settings may result in system’s failure to boot. If this occurs, try to clear the CMOS values and reset the board to default values.
• Refer to the introductions of the battery/clear CMOS jumper in Chapter 2 or navigate to the “BIOS Setup” page of GIGABYTE’s website and search for “Load Optimized Defaults” for how to clear the CMOS values.

Please visit GIGABYTE’s website for details on configuring BIOS Setup. https://www.gigabyte.com/WebPage/954/amd500-bios.html.

Startup Screen:

• The following startup Logo screen will appear when the computer boots.

Function Keys:

• ‹DEL >: BIOS SETUPIQ-FLASH
  • Press the < Delete> key to enter BIOS Setup or to access the Q-Flash utility in BIOS Setup.
• < F12>: BOOT MENU
  • Boot Menu allows you to set the first boot device without entering BIOS Setup. In the Boot Menu, use the up arrow key <> or the down arrow key to select the first boot device, then press to accept.
  • The system will boot from the device immediately.
  • Note: The setting in Boot Menu is effective for one time only. After system restarts, the device boot order will still be based on BIOS Setup settings.
• < END>: Q-FLASH
  • Press the < End> key to access the Q-Flash utility directly without having to enter BIOS Setup first.

Installing the Operating System and Drivers

Operating System Installation
With the correct BIOS settings, you are ready to install the operating system. As some operating systems already include RAID driver, you do not need to install separate RAID driver during the Windows installation process. After the operating system is installed, we recommend that you install all required drivers from the GIGABYTE APP Center to ensure system performance and compatibility. If the operating system to be installed requires that you provide additional RAID driver during the OS installation process, please refer to the steps below:

• Step 1:
  • Go to GIGABYTE’s website, browse to the motherboard model’s web page, download the AMD RAID Preinstall Driver file on the Support\Download\SATA RAID/AHCI page, unzip the file and copy the files to your USB thumb drive.
• Step 2:
  • Boot from the Windows setup disc and perform standard OS installation steps. When the screen requesting you to load the driver appears, select Browse.
• Step 3:
  • Insert the USB thumb drive and then browse to the location of the driver. Select AMD-RAID Bottom Device first and click Next to load the driver. Then select AMD-RAID Controller and click Next to load the driver. Finally, continue the OS installation.

Drivers Installation

• After you install the operating system, a dialog box will appear on the bottom-right corner of the desktop asking if you want to download and install the drivers and GIGABYTE applications via APP Center.
• Click Install to proceed with the installation. (In BIOS Setup, make sure Settings\IO Ports\APP Center Download & Install Configuration\APP Center Download & Install is set to Enabled.)
• When the End User License Agreement dialog box appears, press to install APP Center. On the APP Center screen, select the drivers and applications you want to install and click Install.
• Before the installation, make sure the system is connected to the Internet.
• Please visit GIGABYTE’s website for more software information. https://www.gigabyte.com/WebPage/320/am4-app-center.html?m=sw.
• Please visit GIGABYTE’s website for more troubleshooting information. https://www.gigabyte.com/WebPage/351/faq.html.

Appendix

Configuring a RAID Set
RAID Levels

| RAID 0| RAID 1| RAID 10
---|---|---|---
Minimum Number of Hard Drives| ≥2| 2| 4
Array Capacity| Number of hard drives Size of the smallest drive| Size of the smallest drive| (Number of hard drives/2) Size of the smallest drive
Fault Tolerance| No| Yes| Yes

Before you begin, please prepare the following items:
This motherboard supports RAID 0, RAID 1, and RAID 10. Prepare the correct number of hard drives as indicated in the table above before configuring a RAID array.

• SATA hard drives or SSDs. To ensure optimal performance, it is recommended that you use two hard drives with identical model and capacity.
• Windows setup disc.
• An Internet connected computer.
• A USB thumb drive.
• An M.2 PCIe SSD cannot be used to set up a RAID set with a SATA hard drive.
• Please visit GIGABYTE’s website for details on configuring a RAID array. https://www.gigabyte.com/WebPage/313/am4-raid.html?m=sw.

Regulatory Notices

United States of America, Federal Communications Commission Statement

Supplier’s Declaration of Conformity 47 CFR § 2.1077 Compliance Information

• Product Name: Motherboard
• Trade Name: GIGABYTE
• Model Number: B550 UD AC
• Responsible Party – U.S. Contact Information: G.B.T. Inc.
• Address: 17358 Railroad street, City Of Industry, CA91748
• Tel.: 1-626-854-9338
• Internet contact information: https://www.gigabyte.com.

FCC

FCC Compliance Statement:
This device complies with Part 15 of the FCC Rules, Subpart B, Unintentional Radiators.
Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

The FCC with its action in ET Docket 96-8 has adopted a safety standard for human exposure to radio frequency (RF) electromagnetic energy emitted by FCC certified equipment. The Intel PRO/Wireless 5000 LAN products meet the Human Exposure limits found in OET Bulletin 65, 2001, and ANSI/ IEEE C95.1, 1992. Proper operation of this radio according to the instructions found in this manual will result in exposure substantially below the FCC’s recommended limits.
The following safety precautions should be observed:

• Do not touch or move antenna while the unit is transmitting or receiving.
• Do not hold any component containing the radio such that the antenna is very close or touching any exposed parts of the body, especially the face or eyes, while transmitting.
• Do not operate the radio or attempt to transmit data unless the antenna is connected; if not, the radio may be damaged.
• Use in specific environments:
  • The use of wireless devices in hazardous locations is limited by the constraints posed by the safety directors of such environments.
  • The use of wireless devices on airplanes is governed by the Federal Aviation Administration (FAA).
  • The use of wireless devices in hospitals is restricted to the limits set forth by each hospital.

Antenna use:

• In order to comply with FCC RF exposure limits, low gain integrated antennas should be located at a minimum distance of 7.9 inches (20 cm) or more from the body of all persons.

Explosive Device Proximity Warning

• Warning: Do not operate a portable transmitter (such as a wireless network device) near unshielded blasting caps or in an explosive environment unless the device has been modified to be qualified for such use.

Antenna Warning

• The wireless adapter is not designed for use with high-gain antennas.

Use On Aircraft Caution

• Caution: Regulations of the FCC and FAA prohibit airborne operation of radio-frequency wireless devices because their signals could interfere with critical aircraft instruments.

Other Wireless Devices

• Safety Notices for Other Devices in the Wireless Network: Refer to the documentation supplied with wireless Ethernet adapters or other devices in the wireless network.

Canada, Canada-Industry Notice:
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

1. this device may not cause interference, and
2. this device must accept any interference, including interference that may cause undesired operation of the device.

Caution: When using IEEE 802.11a wireless LAN, this product is restricted to indoor use due to its operation in the 5.15-to 5.25-GHz frequency range. Industry Canada requires this product to be used indoors for the frequency range of 5.15 GHz to 5.25 GHz to reduce the potential for harmful interference to co-channel mobile satellite systems. High power radar is allocated as the primary user of the 5.25-to 5.35-GHz and 5.65 to 5.85-GHz bands. These radar stations can cause interference with and/or damage to this device. The maximum allowed antenna gain for use with this device is 6dBi in order tocomply with the E.I.R.P limit for the 5.25-to 5.35 and 5.725 to 5.85 GHz frequency range in point-to-point operation. To comply with RF exposure requirements all antennas should be located at a minimum distance of 20cm, or the minimum separation distance allowed by the module approval, from the body of all persons. Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved forthe transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be chosen so that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

European Union (EU) CE Declaration of Conformity
This device complies with the following directives: Electromagnetic Compatibility Directive 2014/30/EU, Low-voltage Directive 2014/35/EU, Radio Equipment Directive 2014/53/EU, ErP Directive 2009/125/EC, RoHS directive (recast) 2011/65/EU & the 2015/863 Statement. This product has been tested and found to comply with all essential requirements of the Directives. European Union (EU) RoHS (recast) Directive 2011/65/EU & the European Commission Delegated Directive (EU) 2015/863 Statement GIGABYTE products have not intended to add and safe from hazardous substances (Cd, Pb, Hg, Cr+6, PBDE, PBB, DEHP, BBP, DBP and DIBP). The parts and components have been carefully selected to meet RoHS requirement. Moreover, we at GIGABYTE are continuing our efforts to develop products that do not use internationally banned toxic chemicals. European Union (EU) Community Waste Electrical & Electronic
Equipment (WEEE) Directive Statement
GIGABYTE will fulfill the national laws as interpreted from the 2012/19/ EU WEEE (Waste Electrical and Electronic Equipment) (recast) directive. The WEEE Directive specifies the treatment, collection, recycling and disposal of electric and electronic devices and their components. Under the Directive, used equipment must be marked, collected separately, and disposed of properly.

WEEE Symbol Statement

• The symbol shown below is on the product or on its packaging, which indicates that this product must not be disposed of with other waste. Instead, the device should be taken to the waste collection centers for activation of the treatment, collection, recycling and disposal procedure.
• For more information about where you can drop off your waste equipment for recycling, please contact your local government office, your household waste disposal service or where you purchased the product for details of environmentally safe recycling.

Battery Information

• European Union—Disposal and recycling information
• GIGABYTE Recycling Program (available in some regions)
• This symbol indicates that this product and/or battery should not be disposed of with household waste. You must use the public collection system to return, recycle, or treat them in compliance with the local regulations.

End of Life Directives-Recycling
The symbol shown below is on the product or on its packaging, which indicates that this product must not be disposed of with other waste. Instead, the device should be taken to the waste collection centers for activation of the treatment, collection, recycling and disposal procedure

WARNING

• INGESTION HAZARD: This product contains a button cell or coin battery.
• DEATH or serious injury can occur if ingested.
• A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours.
• KEEP new and used batteries OUT OF REACH of CHILDREN
• Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body
• Battery type: CR2032
• Non-rechargeable batteries are not to be recharged.
• Remove and immediately recycle or dispose of used batteries, batteries from equipment not used for an extended period of time according to local regulations and keep away from children. Do NOT dispose of batteries in household trash or incinerate.
• Even used batteries may cause severe injury or death.
• Do not force discharge, recharge, disassemble, heat above (manufacturer’s specified temperature rating) or incinerate. Doing so may result in injury due to venting, leakage or explosion resulting in chemical burns.
• For treatment information, call a local poison control center.
• Ensure the batteries are installed correctly according to polarity (+ and -).
• Do not mix old and new batteries, different brands or types of batteries, such as alkaline, carbon-zinc, or rechargeable batteries.

European Community Radio Equipment Directive Compliance Statement:

• This equipment complies with all the requirements and other relevant provisions of Radio Equipment Directive 2014/53/EU.
• This equipment is suitable for home and office use in all the European Community Member States and EFTA Member States.
• The low band 5.15 -5.35 GHz is for indoor use only

Wireless module approvals:

• Wireless module manufacturer: Realtek Semiconductor Corp.
• Wireless module model name: RTL8821CE

Contact Us

GIGA-BYTE TECHNOLOGY CO., LTD.

• Address: No.6, Baoqiang Rd., Xindian Dist., New Taipei City 231
• TEL: +886-2-8912-4000,
• FAX: +886-2-8912-4005
• Tech. and Non-Tech. Support (Sales/Marketing): https://esupport.gigabyte.com.
• WEB address (English): https://www.gigabyte.com.
• WEB address (Chinese): https://www.gigabyte.com/tw.

GIGABYTE eSupport
To submit a technical or non-technical (Sales/Marketing) question, please link to: https://esupport.gigabyte.com.

GIGABYTE will reduce paper use in order to fulfill the responsibilities of a global citizen. Also, to reduce the impacts on global warming, the packaging materials of this product are recyclable and reusable. GIGABYTE works with you to protect the environment. For more product details, please visit GIGABYTE’s website

Copyright

• © 2023 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
• The trademarks mentioned in this manual are legally registered to their respective owners.

Disclaimer

• Information in this manual is protected by copyright laws and is the property of GIGABYTE. Changes to the specifications and features in this manual may be made by GIGABYTE without prior notice.
• No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by any means without GIGABYTE’s prior written permission.
• For detailed product information, carefully read the User’s Manual.
• For quick set-up of the product, refer to the Quick Installation Guide on GIGABYTE’s website. https://download.gigabyte.com/FileList/Manual/mb_manual_installation-guide_103.pdf?m=sw.
• For product-related information, check on our website at: https://www.gigabyte.com.
• Identifying Your Motherboard Revision
• The revision number on your motherboard looks like this: “REV: X.X.” For example, “REV: 1.0” means the revision of the motherboard is 1.0.
• Check your motherboard revision before updating the motherboard BIOS, and drivers, or when looking for technical information.

Example:

Documents / Resources

| GIGABYTE B550 UD AC Motherboard [pdf] User Guide
B550 UD AC Motherboard, B550 UD AC, Motherboard
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References

• GIGABYTE - eSupport
• GIGABYTE Global
• Utility | Service / Support - GIGABYTE Global
• GIGABYTE 技嘉科技

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