msi A320M-A AM4 Socket AMD Ryzen m-ATX Motherboard User Guide
- June 4, 2024
- MSI
Table of Contents
- A320M-A AM4 Socket AMD Ryzen m-ATX Motherboard
- Safety Information
- Specifications
- Package contents
- Rear I/O Panel
- Overview of Components
- PCI_E1~2: PCIe Expansion Slots
- JFP1, JFP2: Front Panel Connectors
- SATA1~4: SATA 6Gb/s Connectors
- ATX_PWR1, CPU_PWR1: Power Connectors
- JUSB1, JUSB2: USB 2.0 Connectors
- JUSB3: USB 3.2 Gen1 Connector
- JAUD1: Front Audio Connector
- JCOM1: Serial Port Connector
- JTPM1: TPM Module Connector
- JCI1: Chassis Intrusion Connector
- JBAT1: Clear CMOS (Reset BIOS) Jumper
- Updating BIOS
- Installing OS, Drivers & Utilities
- Regulatory Notices
- Environmental Policy
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
A320M-A AM4 Socket AMD Ryzen m-ATX Motherboard
User Guide
A320M-A AM4 Socket AMD Ryzen m-ATX Motherboard
Thank you for purchasing the MSI® A320M-A PRO motherboard. This User Guide gives information about board layout, component overview, BIOS setup, and software installation.
Safety Information
- The components included in this package are prone to damage from electrostatic discharge (ESD). Please adhere to the following instructions to ensure successful computer assembly.
- Ensure that all components are securely connected. Loose connections may cause the computer to not recognize a component or fail to start.
- Hold the motherboard by the edges to avoid touching sensitive components.
- It is recommended to wear an electrostatic discharge (ESD) wrist strap when handling the motherboard to prevent electrostatic damage. If an ESD wrist strap is not available, discharge yourself of static electricity by touching another metal object before handling the motherboard.
- Store the motherboard in an electrostatic shielding container or on an anti-static pad whenever the motherboard is not installed.
- Before turning on the computer, ensure that there are no loose screws or metal components on the motherboard or anywhere within the computer case.
- Do not boot the computer before installation is completed. This could cause permanent damage to the components as well as injury to the user.
- If you need help during any installation step, please consult a certified computer technician.
- Always turn off the power supply and unplug the power cord from the power outlet before installing or removing any computer component.
- Keep this user guide for future reference.
- Keep this motherboard away from humidity.
- Make sure that your electrical outlet provides the same voltage as is indicated on the PSU, before connecting the PSU to the electrical outlet.
- Place the power cord such a way that people can not step on it. Do not place anything over the power cord.
- All cautions and warnings on the motherboard should be noted.
- If any of the following situations arises, get the motherboard checked by service personnel:
- Liquid has penetrated into the computer.
- The motherboard has been exposed to moisture.
- The motherboard does not work well or you can not get it work according to user guide.
- The motherboard has been dropped and damaged.
- The motherboard has obvious sign of breakage.
- Do not leave this motherboard in an environment above 60°C (140°F), it may damage the motherboard.
Specifications
CPU| Supports 1st, 2nd and 3rd Gen AMD Ryzen™ / Ryzen™ with Radeon™ Vega
Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics / Athlon™ with Radeon™
Vega Graphics and A-series / Athlon X4 Desktop Processors for Socket AM4
---|---
Chipset| AMD® A320 Chipset
Memory| ∙ 2x DDR4 memory slots, support up to 32GB*
▪ Support 1866/ 2133/ 2400/ 2667(OC)/ 2933(OC)/ 3200(OC)+ MHz
∙ Dual channel memory architecture
∙ Supports non-ECC UDIMM memory
∙ Supports ECC UDIMM memory (non-ECC mode)
- Please refer www.msi.com for more information on compatible memory.
Expansion Slots| ∙ 1x PCIe 3.0 x16 slot
▪ Supports x16 speed with 1st, 2nd, and 3rd Gen AMD Ryzen™ processors
▪ Supports x8 speed with Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics processors
▪ Supports x4 speed with AMD® Athlon™ with Radeon™ Vega Graphics Processors
∙ 1x PCIe 2.0 x1 slot
Onboard Graphics| ∙ 1x DVI-D port, supports a maximum resolution of 1920×1200@60Hz
∙ 1x HDMI™ port 1.4, supports a maximum resolution of 4096×2160@30Hz - Only support when using AMD® Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics/ Athlon™ with Radeon™ Vega Graphics Processors
- Maximum shared memory of 2048 MB
Storage| AMD® A320 Chipset
∙ 4x SATA 6Gb/s ports
∙ Supports RAID 0, RAID 1, and RAID 10
USB| AMD® A320 Chipset
∙ 6x USB 3.2 Gen1 (SuperSpeed USB) (4 Type-A ports on the back panel, 2 ports available through the internal connectors)
∙ 6x USB 2.0 (High-speed USB) ports (2 Type-A ports on the the back panel, 4 ports available through the internal connectors)
Audio| ∙ Realtek® ALC892 Codec
∙ 7.1-Channel High-Definition Audio
LAN| 1x Realtek 8111H Gigabit LAN controller
Back Panel Connectors| ∙ 1x PS/2 keyboard port
∙ 1x PS/2 mouse port
∙ 1x DVI-D port
∙ 1x HDMI™ port
∙ 4x USB 3.2 Gen1 Type-A ports
∙ 1x LAN (RJ45) port
∙ 2x USB 2.0 Type-A ports
∙ 3x Audio jacks
Internal Connectors| ∙ 1x 24-pin ATX main power connector
∙ 1x 4-pin ATX 12V power connector
∙ 4x SATA 6Gb/s connectors
∙ 1x USB 3.2 Gen1 connector (supports additional 2 USB 3.2 Gen1 ports)
∙ 2x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
∙ 1x 4-pin CPU fan connector
∙ 1x 4-pin system fan connector
∙ 1x Front panel audio connector
∙ 1x Serial port connector
∙ 2x Front panel connectors
∙ 1x TPM module connector
∙ 1x Chassis Intrusion connector
∙ 1x Clear CMOS jumper
I/O Controller| NUVOTON NCT5565 Controller Chip
Hardware Monitor| ∙ CPU/System temperature detection
∙ CPU/System fan speed detection
∙ CPU/System fan speed control
Form Factor| ∙ m-ATX Form Factor
∙ 8.9 in. x 7.4 in. (22.6 cm x 18.7 cm)
BIOS Features| ∙ 1x 128 Mb flash
∙ UEFI AMI BIOS
∙ ACPI 6.1 , SM BIOS 2.8
∙ Multi-language
Software| ∙ Drivers
∙ SUPER CHARGER
∙ COMMAND CENTER
∙ LIVE UPDATE 6
∙ SMART TOOL
∙ X-BOOST
∙ CPU-Z MSI GAMING
∙ Google Chrome™, Google Toolbar, Google Drive
∙ Norton™ Internet Security Solution
Package contents
Please check the contents of your motherboard package. It should contain:
- Motherboard
- Driver DVD
- Quick Installation Guide
- I/O Shielding
- SATA 6G Cable
- Case Badge
- Product Registration Card
⚠ Important
If any of the above items are damaged or missing, please contact your
retailer.
Rear I/O Panel
LAN Port LED Status Table Audio 7.1-channel
Configuration
To configure 7.1-channel audio, you have to connect front audio I/O module to
JAUD1 connector and follow the below steps.
- Click on the Realtek HD Audio Manager > Advanced Settings to open the dialog below.
- Select Mute the rear output device, when a front headphone is plugged in.
- Plug your speakers into audio jacks on the rear and front I/O panels. When you plug into a device at an audio jack, a dialogue window will pop up asking you which device is current connected.
Overview of Components
- Distance from the center of the CPU to the nearest DIMM slot.
CPU Socket
Please install the CPU into the CPU socket as shown below.
⚠ Important
- Always unplug the power cord from the power outlet before installing or removing the CPU.
- Please retain the CPU protective cap after installing the processor. MSI will deal with Return Merchandise Authorization (RMA) requests if only the motherboard comes with the protective cap on the CPU socket.
- When installing a CPU, always remember to install a CPU heatsink. A CPU heatsink is necessary to prevent overheating and maintain system stability.
- Confirm that the CPU heatsink has formed a tight seal with the CPU before booting your system.
- Overheating can seriously damage the CPU and motherboard. Always make sure the cooling fans work properly to protect the CPU from overheating. Be sure to apply an even layer of thermal paste (or thermal tape) between the CPU and the heatsink to enhance heat dissipation.
- If you purchased a separate CPU and heatsink/ cooler, Please refer to the documentation in the heatsink/ cooler package for more details about installation.
DIMM Slots
Please install the memory module into the DIMM slot as shown below.
⚠ Important
- Due to chipset resource usage, the available capacity of memory will be a little less than the amount installed.
- Please note that the maximum capacity of addressable memory is 4GB or less for 32-bit Windows OS due to the memory address limitation. Therefore, we recommended that you install 64-bit Windows OS if you want to install more than 4GB of memory on the motherboard.
PCI_E1~2: PCIe Expansion Slots
Processors
Slots| 1st, 2nd and
3rd Gen AMD
RyzenTM| RyzenTM with RadeonTM Vega Graphics/ 2nd Gen AMD RyzenTM with
RadeonTM Graphics and A-series/ Athlon X4| AthlonTM with RadeonTM Vega
Graphics
---|---|---|---
PCI_E1| PCIe 3.0 x16| PCIe 3.0 x8| PCIe 3.0 x4
PCI_E2| PCIe 2.0 x1| PCIe 2.0 x1| PCIe 2.0 x1
⚠ Important
- If you install a large and heavy graphics card, you need to use a tool such as MSI Gaming Series Graphics Card Bolster to support its weight to prevent the deformation of the slot.
- When adding or removing expansion cards, always turn off the power supply and unplug the power supply power cable from the power outlet. Read the expansion card’s documentation to check for any necessary additional hardware or software changes.
JFP1, JFP2: Front Panel Connectors
These connectors connect to the switches and LEDs on the front panel.
JFP1 | 1 | HDD LED + | 2 | Power LED + |
---|---|---|---|---|
3 | HDD LED – | 4 | Power LED – | |
5 | Reset Switch | 6 | Power Switch | |
7 | Reset Switch | 8 | Power Switch | |
9 | Reserved | 10 | No Pin |
JFP2 | 1 | Speaker – | 2 | Buzzer + |
---|---|---|---|---|
3 | Buzzer – | 4 | Speaker + |
SATA1~4: SATA 6Gb/s Connectors
These connectors are SATA 6Gb/s interface ports. Each connector can connect to one SATA device.
⚠ Important
- Please do not fold the SATA cable at a 90-degree angle. Data loss may result during transmission otherwise.
- SATA cables have identical plugs on either side of the cable. However, it is recommended that the flat connector be connected to the motherboard for space saving purposes.
ATX_PWR1, CPU_PWR1: Power Connectors
These connectors allow you to connect an ATX power supply.
ATX_PWR1 | 1 | +3.3V | 13 | +3.3V |
---|---|---|---|---|
2 | +3.3V | 14 | -12V | |
3 | Ground | 15 | Ground | |
4 | +5V | 16 | PS-ON# | |
5 | Ground | 17 | Ground | |
6 | +5V | 18 | Ground | |
7 | Ground | 19 | Ground | |
8 | PWR OK | 20 | Res | |
9 | 5VSB | 21 | +5V | |
10 | +12V | 22 | +5V | |
11 | +12V | 23 | +5V | |
12 | +3.3V | 24 | Ground | |
CPU_PWR1 | 1 | Ground | 3 | +12V |
--- | --- | --- | --- | --- |
2 | Ground | 4 | +12V |
⚠ Important
Make sure that all the power cables are securely connected to a proper ATX
power supply to ensure the stable operation of the motherboard.
CPU_FAN1, SYS_FAN1: PWM Fan Connectors
PWM Mode fan connectors provide constant 12V output and adjust fan speed with
the speed control signal. When you plug a 3-pin (Non-PWM) fan to a fan
connector in PWM mode, the fan speed will always maintain at 100%, which might
create a lot of noise.
You can adjust fan speed in BIOS > Advanced > Hardware Monitor.
CPU_FAN1/ SYS_FAN1 | PWM Mode pin definition |
---|---|
1 | Ground |
3 | Sense |
JUSB1, JUSB2: USB 2.0 Connectors
These connectors allow you to connect USB 2.0 ports on the front panel.
| 1| VCC| 2| VCC
---|---|---|---|---
3| USB0-| 4| USB1-
5| USB0+| 6| USB1+
7| Ground| 8| Ground
9| No Pin| 10| NC
⚠ Important
- Note that the VCC and Ground pins must be connected correctly to avoid possible damage.
- In order to recharge your iPad,iPhone and iPod through USB ports, please install MSI® SUPER CHARGER software.
JUSB3: USB 3.2 Gen1 Connector
These connectors allow you to connect USB 3.2 Gen1 ports on the front panel.
| 1| Power| 11| USB2.0+
---|---|---|---|---
2| USB3_RX_DN| 12| USB2.0-
3| USB3_RX_DP| 13| Ground
4| Ground| 14| USB3_TX_C_DP
5| USB3_TX_C_DN| 15| USB3_TX_C_DN
6| USB3_TX_C_DP| 16| Ground
7| Ground| 17| USB3_RX_DP
8| USB2.0-| 18| USB3_RX_DN
9| USB2.0+| 19| Power
10| NC| 20| No Pin
⚠ Important
Note that the Power and Ground pins must be connected correctly to avoid
possible damage.
JAUD1: Front Audio Connector
This connector allows you to connect audio jacks on the front panel.
| 1| MIC L| 2| Ground
---|---|---|---|---
3| MIC R| 4| NC
5| Head Phone R| 6| MIC Detection
7| SENSE_SEND| 8| No Pin
9| Head Phone L| 10| Head Phone Detection
JCOM1: Serial Port Connector
This connector allows you to connect the optional serial port with a bracket.
| 1| DCD| 2| SIN
---|---|---|---|---
3| SOUT| 4| DTR
5| Ground| 6| DSR
7| RTS| 8| CTS
9| RI| 10| No Pin
JTPM1: TPM Module Connector
This connector is for TPM (Trusted Platform Module). Please refer to the TPM security platform manual for more details and usages.
| 1| LPC Clock| 2| 3V Standby power
---|---|---|---|---
3| LPC Reset| 4| 3.3V Power
5| LPC address & data pin0| 6| Serial IRQ
7| LPC address & data pin1| 8| 5V Power
9| LPC address & data pin2| 10| No Pin
11| LPC address & data pin3| 12| Ground
13| LPC Frame| 14| Ground
JCI1: Chassis Intrusion Connector
This connector allows you to connect the chassis intrusion switch cable.
Using a chassis intrusion detector
- Connect the JCI1 connector to the chassis intrusion switch/ sensor on the chassis.
- Close the chassis cover.
- Go to BIOS > Security > Chassis Intrusion Configuration.
- Set Chassis Intrusion to Enabled.
- Press F10 to save and exit and then press the Enter key to select Yes.
- Once the chassis cover is opened again, a warning message will be displayed on the screen when the computer is turned on.
Resetting the chassis intrusion warning
- Go to BIOS > Security > Chassis Intrusion Configuration.
- Set Chassis Intrusion to Reset.
- Press F10 to save and exit and then press the Enter key to select Yes.
JBAT1: Clear CMOS (Reset BIOS) Jumper
There is CMOS memory onboard that is externally powered by a battery located
on the motherboard to save system configuration data. If you want to clear the
system
configuration set the jumpers to clear the CMOS memory.
Resetting BIOS to default values
- Power off the computer and unplug the power cord
- Use a jumper cap to short JBAT1 for about 5-10 seconds.
- Remove the jumper cap from JBAT1.
- Plug the power cord and power it on the computer.
BIOS Setup
The default settings offer optimal performance for system stability in normal
conditions. You should always keep the default settings to avoid possible
system damage or failure booting unless you are familiar with BIOS.
⚠ Important
- BIOS items are continuous update for better system performance. Therefore, the description may be slightly different from the latest BIOS and should be held for reference only. You could also refer to the HELP information panel for the BIOS item description.
- The pictures in this chapter are for reference only and may vary from the product you purchased.
- The BIOS items will vary with the processor.
Entering BIOS Setup
Press the Delete key, when the Press DEL key is to enter the Setup Menu, F11
to enter the Boot Menu message appears on the screen during the boot process.
Function key
F1: General Help list
F4: Enter CPU Specifications menu
F5 : Enter the Memory-Z menu
F6: Load-optimized defaults
F10: Save Change and Reset*
F12: Take a screenshot and save it to a USB flash drive (FAT/ FAT32
format only).
-
When you press F10, a confirmation window appears and it provides the modification information. Select between Yes or No to confirm your choice.
Resetting BIOS
You might need to restore the default BIOS setting to solve certain problems. There are several ways to reset BIOS:- Go to BIOS and press F6 to load optimized defaults.
- Short the Clear CMOS jumper on the motherboard.
⚠ Important
Please refer to the Clear CMOS jumper section for resetting BIOS.
Updating BIOS
Updating BIOS with M-FLASH
Before updating:
Please download the latest BIOS file that matches your motherboard model from
the MSI website. And then save the BIOS file into the USB flash drive.
Updating BIOS:
- Insert the USB flash drive that contains the updated file into the computer.
- Press the Del key to enter the BIOS Setup during POST.
- Go to BIOS > M-FLASH > Select one file to update BIOS, and select a BIOS file to perform the BIOS update process.
- After the flashing process is 100% completed, the system will reboot automatically.
Updating the BIOS with Live Update 6
Before updating:
Make sure the LAN driver is already installed and the internet connection is
set properly.
Updating BIOS:
- Install and launch MSI LIVE UPDATE 6.
- Select BIOS Update.
- Click on the Scan button.
- Click on the Download icon to download and install the latest BIOS file.
- Click Next and choose In Windows mode. And then click Next and Start to start updating BIOS.
- After the flashing process is 100% completed, the system will restart automatically.
Installing OS, Drivers & Utilities
Please download and update the latest utilities and drivers at www.msi.com
Installing Windows® 10
- Power on the computer.
- Insert the Windows® 10 installation disc/USB into your computer.
- Press the Restart button on the computer case.
- Press the F11 key during the computer POST (Power-On Self Test) to get into Boot Menu.
- Select the Windows® 10 installation disc/USB from the Boot Menu.
- Press any key when the screen shows Press any key to boot from CD or DVD… message.
- Follow the instructions on the screen to install Windows® 10.
Installing Drivers
-
Start up your computer in Windows® 10.
-
Insert MSI® Driver Disc into your optical drive.
-
Click the Select to choose what happens with this disc pop-up notification, then select Run DVDSetup.exe to open the installer. If you turn off the AutoPlay
feature from the Windows Control Panel, you can still manually execute the DVDSetup.exe from the root path of the MSI Driver Disc. -
The installer will find and list all necessary drivers in the Drivers/Software tab.
-
Click the Install button in the lower-right corner of the window.
-
The driver’s installation will then be in progress, after it has finished it will prompt you to restart.
-
Click the OK button to finish.
-
Restart your computer.
Installing Utilities
Before you install utilities, you must complete the driver’s installation.
- Open the installer as described above.
- Click the utility tab.
- Select the utilities you want to install.
- Click the Install button in the lower-right corner of the window.
- The utility installation will then be in progress, after it has finished it will prompt you to restart.
- Click the OK button to finish.
- Restart your computer.
Regulatory Notices
FCC Compliance Statement
Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation.
This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
** Tested to comply with FCC standards
FOR HOME OR OFFICE USE
This device complies with part 15 of the FCC Rules. 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.
CE Conformity
** Products bearing the CE marking comply with one or more of the following
EU Directives as may be applicable:
RED 2014/53/EU; Low Voltage Directive 2014/35/ EU; EMC Directive 2014/30/EU;
RoHS Directive 2011/65/EU.
Compliance with these directives is assessed using applicable European
Harmonized Standards.
The point of contact for regulatory matters is MSI,
MSI-NL Eindhoven 5706 5692 ER Son.
C-Tick Compliance
N1996
Battery Information
European Union:
Batteries, battery packs, and accumulators should not be disposed of as
unsorted household waste. Please use the public collection system to return,
recycle, or treat them in compliance with local regulations.
Taiwan:
For better environmental protection, waste batteries should be collected
separately for recycling or special disposal.
California, USA:
** The button cell battery may contain perchlorate material and requires
special handling when recycled or disposed of in California.
For further information please visit:
http://www.dtsc.ca.gov/hazardouswaste/perchlorate/
CAUTION: There is a risk of explosion if the battery is incorrectly
replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Chemical Substances Information
In compliance with chemical substances regulations, such as the EU REACH
Regulation (Regulation EC No. 1907/2006 of the European
Parliament and the Council), MSI provides the information of chemical
substances in products at:
http://www.msi.com/html/popup/csr/evmtprtt_pcm.html
WEEE (Waste Electrical and Electronic Equipment) Statement**
To protect the global environment and as an environmentalist, MSI must remind
you that…
Under the European Union (“EU”) Directive on Waste Electrical and Electronic
Equipment, Directive 2002/96/EC, which takes effect on August 13, 2005,
products of “electrical and electronic equipment” cannot be discarded as
municipal wastes anymore, and manufacturers of covered electronic equipment
will be obligated to take back such products at the end of their useful life.
MSI will comply with the product take-back requirements at the end of the life
of MSI-branded products that are sold in the EU. You can return these products
to local collection points.
Environmental Policy
- The product has been designed to enable proper reuse of parts and recycling and should not be thrown away at its end of life.
- Users should contact the local authorized point of collection for recycling and disposal of their end-of-life products.
- Visit the MSI website and locate a nearby distributor for further recycling information. Users may also reach us at gpcontdev@msi.com for information regarding proper Disposal, Take-back, Recycling, and Disassembly of MSI products.
Copyright
Micro-Star Int’l Co., Ltd.
Copyright © 2019 All rights reserved.
The MSI logo used is a registered trademark of Micro-Star Int’l Co., Ltd. All
other marks and names mentioned may be trademarks of their respective owners.
No warranty as to accuracy or completeness is expressed or implied. MSI
reserves the right to make changes to this document without prior notice.
Trademark Recognition
All product names used in this manual are the properties of their respective
owners and are acknowledged.
Technical Support
If a problem arises with your system and no solution can be obtained from the
user guide, please contact your place of purchase or a local distributor.
Alternatively, please try the following helpful resources for further
guidance.
- Visit the MSI website for a technical guide, BIOS updates, driver updates, and other information: http://www.msi.com
- Register your product at http://register.msi.com
Revision History
Version 1.0, 2019/08, First release
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>