AV Access 4KSW21-DM 2 x 1 Dual-Monitor KVM Switcher User Manual
- June 4, 2024
- AV Access
Table of Contents
4KSW21-DM
2 x 1 Dual-Monitor KVM Switcher 
User Manual
Disclaimers
The information in this manual has been carefully checked and is believed to
be accurate. AV Access Technology Limited assumes no responsibility for any
infringements of patents or other rights of third parties which may result
from its use.
AV Access Technology Limited assumes no responsibility for any inaccuracies
that may be contained in this document. AV Access Technology Limited also
makes no commitment to update or to keep current the information contained in
this document.
AV Access Technology Limited reserves the right to make improvements to this
document and/or product at any time and without notice.
Copyright
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without express authorization are prohibited. Offenders will be held liable
for payment of damages. All rights created by patent grant or registration of
a utility model or design patent are reserved. Copyright ©2017 AV Access
Technology Limited All rights reserved.
Trademarks Notice
All products or service names mentioned in this document may be trademarks of
the companies with which they are associated.
Contact Us
Email: info@avaccess.com
Important Safety Instructions
- Do not expose this device to rain, moisture, dripping, or splashing. No objects filled with liquids, such as vases, shall be placed on the device.
- Do not install or place this unit in a bookcase, built-in cabinet, or in another confined space. Ensure the unit is well ventilated.
- To prevent the risk of electric shock or fire hazards due to overheating, do not obstruct the unit’s ventilation openings with newspapers, tablecloths, curtains, or similar items.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other devices (including amplifiers) that produce heat.
- Do not place sources of naked flames, such as lighted candles, on the unit.
- Clean this device only with a dry cloth.
- Unplug this device during lightning storms or when unused for long periods of time.
- Protect the power cord from being walked on or pinched, particularly at plugs.
- Only use attachments/accessories specified by the manufacturer.
- Refer all servicing to qualified service personnel
Introduction.
Overview
4KSW21-DM is a 2×1 HDMI KVM Switcher with dual-channel switching and hotkey
switching. It supports HDMI 2.0 and HDCP 2.2 compatibility, and supports
resolutions up to 4K@60Hz 4:4:4 8bit, and can also transmit USB 3.0 signal up
to 5Gbps for KVM function. It can share two monitors and USB devices between
two PCs and supports two modes to operate.
The switcher features a virtual interaction function, and automatically wake- up the connected PC in standby mode, which can reduce the switching time. It also supports direct switching through buttons on the front panel and hotkey through the keyboard connected to the special USB 1.1 port. It provides a wide compatibility choice for different operating systems, such as Windows, Mac OS and Linux, no driver required, and simple plug-and-play.
Features
- 2 in 1 dual-channel KVM switcher:
- Each input group supports two independent HDMI input channels, which can be connected to two HDMI output ports of the PC and extended to two external monitors.
- Each monitor has an independent channel, which can support different resolutions.
- Supports HDMI 2.0 with resolutions up to 4K@60Hz 4:4:4 8bit and HDCP 2.2 compatibility.
- Supports all HDR formats, such as HDR 10, HLG, HDR 10+, and Dolby Vision.
- Supports USB 3.0 super-speed data transmission with speeds up to 5Gbps.
- Supports new generation PC automatic wake-up function, when switching to the PC in sleep mode, it will automatically wake up the PC and no other operations are needed.
- Fast switching, is based on the virtual interaction function.
- One USB 1.1 port for the keyboard and three USB 3.0 ports for USB devices.
- Supports microphone input and headphone output for audio application.
- Supports KVM and USB operation mode, which can be selected via the DIP switch on the front panel.
- Supports button switch and hotkey switch (Keyboard must be connected to USB 1.1 port).
- Supports CEC trigger on HDMI outputs.
- No driver required, plug and play.
Package Contents
Before you start the installation of the product, please check the package contents:
- Switcher x 1
- Power Adapter (DC 12V 3A) x 1
- AC Power Cord with US Pins x 1
- AC Power Cord with EU Pins x 1
- AC Power Cord with UK Pins x 1
- USB 3.0 Type-A to Type-B Cable (L=1.8m) x 2
- User Manual x 1
Panel
Front Panel
| No. | Name | Description |
|---|---|---|
| 1 | Power Switch | Press to power on/off the device. |
| 2 | Mode | KVM: Set the device to “KVM” mode (default). |
USB: Set the device to “USB” mode.
Note: Detail information, please refer to the “Application” section.
3| Switch Button and LED 1&2| Press to select input group between HDMI In
1A/1B and HDMI In 2A/2B.
LED 1&2:
On: Select HDMI In 1A and 1B or HDMI In 2A and 2B as input sources.
Off: The corresponding HDMI Inputs are not selected.
4| USB 1.1| USB 1.1 type-A port, can be used to connect to a USB keyboard for
hotkey function. (Detail information, please refer to the “Hotkey Function”
section)
Note: It is specialized for connecting the keyboard and not recommended
to connect to other USB slave devices.
5| USB 3.0| USB 3.0 type-A ports, can be used to connect to USB 3.0 high-speed
devices for KVM function.
Note: With one high power port of 5V 1.5A supported, it can be used for
connecting USB devices with high power, such as connecting a USB Camera.
6| MIC In| Connect to a Microphone. The Microphone follows the USB Host port
selected.
7| Line Out| Connect to an earphone. The earphone follows the USB Host port
selected.
Rear Panel
| No. | Name | Description |
|---|---|---|
| 1 | DC 12V | Connect to the power adapter provided. |
| 2&4 | HDMI In 1A & 1B | Connect to two HDMI output ports of PC respectively. |
HDMI In 1A and HDMI In 1B can be seen as a group, hereinafter referred to as
group 1 in this manual.
3| USB Host 1| Connect to a host device. USB Host 1 is bound with group 1.
When select group 1 as sources to input, the USB devices can be connected to
the host PC connected to USB Host 1 port.
5&7| HDMI In 2A & 2B| Connect to two HDMI output ports of PC respectively.
HDMI In 2A and HDMI In 2B can be seen as a group, hereinafter referred to as group 2 in this manual.
6| USB Host 2| Connect to a host device. USB Host 2 is bound with group 2.
When select group 2 as sources to input, the USB devices can be connected to
the host PC connected to the USB Host 2 port.
8| Monitor A & B| Connect to HDMI displays.
9| Update| Micro USB, for firmware upgrade.
Application
Warnings:
- Before wiring, disconnect the power from all devices.
- During wiring, connect and disconnect the cables gently.
The switcher supports two application modes: KVM mode and USB mode. It can be set through a DIP switch on the front panel. By default, the switcher is in KVM mode.
KVM Mode
Switch the DIP switch to “KVM” mode. Wiring as the following figure.
In this mode, when switching the input source to group 1 or group 2:
- The connected USB devices, microphones, and earphones can be connected to Host PC 1 or 2.
- When switching to group 1, the display connected to Monitor A and Monitor B will output video from HDMI In 1A and HDMI In 1B respectively. When switching to group 2, the display connected to Monitor A and Monitor B will output video from HDMI In 2A and HDMI In 2B respectively.
USB Mode
Switch the DIP switch to “USB” mode. Wiring as the following figure.
In this mode, when switching the input source to group 1 or group 2:
- The connected USB devices, microphones, and earphones can be connected to the Host PC 1 or 2.
- The displays connected to Monitor A and Monitor B will constantly output video from HDMI In 1A and HDMI In 2A respectively.
Control of the Switcher
You can choose to switch input sources at your convenience through the front panel button or Hotkey function.
Front Panel Control
Users can choose to use the front panel button to do basic switching
operations.
Connect the switcher as required and power on all the attached devices.
Hotkey Function
One USB 1.1 port othe n rear panel of the switcher supportthe s keyboard Hotkey function.
Supported Hotkey:
- Tab (default)
- Left Ctrl
- Right Ctrl
- Caps Lock
| Key Operation | Function |
|---|---|
| Press the “Hotkey” twice quickly | Switch to this hotkey. |
| Press “Hotkey” +”1” | Switch to input group 1. |
| Press “Hotkey” +”2” | Switch to input group 2. |
| Press “Hotkey” + “Left” | Switch to the previous input group (Cycle group |
2->1).
---|---
Press “Hotkey” + “Right”| Switch to the next input group (Cycle group 1->2).
For example:
If you want to use the “Left Ctrl” as a hotkey, press the “Left Ctrl” key
twice quickly to switch the hotkey to it, and other hotkeys are invalid. If
you need to use other hotkeys, please repeat the above steps.
Specifications
Technical
Video Signal| HDMI: HDMI with 4K@60Hz 4:4:4, HDCP 2.2
USB Data| USB 3.0, up to 5Gbps data transfer rate. With one high- the power of
5V/1.5A port included.
Input/Output Resolution Supported| SMPTE:
1280x720P1,2,3,4,5,6,7,8, 1920x1080I6,8, 1920x1080P1,2,3,4,5,6,7,8,9,
2560×10809, 3840×10809, 3840×21602,3,5,6,8, 4096×21602,3,5,6,8 VESA:
800×6008, 1024×7688, 1280×7688, 1280×8008, 1280×9608, 1280×10248,
1360×7688, 1366×7688, 1400×10508, 1440×9008, 1600×9008, 1600×12008,
1680×10508, 1920×12008, 2560×144010
1 = at 23.98 Hz, 2 = at 24 Hz, 3 = at 25 Hz, 4 = at 29.97 Hz, 5 = at 30 Hz, 6
= at 50 Hz, 7 = at 59.94 Hz, 8 = at 60 Hz, 9 = 120Hz, 10 = 144Hz
HDR Format Supported| All HDR formats, including HDR 10, HLG, HDR 10+, and
Dolby Vision
Audio Format Supported| HDMI: Fully supports audio formats in HDMI 2.0
specification, including PCM 2.0/5.1/7.1, Dolby TrueHD, Dolby Atmos, DTS-HD
Master Audio, and DTS:X
MIC IN: Stereo
LINE OUT: Stereo
Max Data Rate| 18 Gbps
General
Operating Temperature| 0°C to + 45°C (32 to + 113 °F)
Storage Temperature| -20 to +70°C (-4 to + 158 °F)
Humidity| 20% to 90%, non-condensing
Power Consumption (Maximum)| 3.6W
Device Dimensions (W x H x D)| 230mm x 26.2mm x 142.6mm/ 9.06’’ x 1.03’’ x
5.61’’
Product Weight| 0.83kg/1.83lbs
Transmission Distance
| Cable | Range | Supported Video |
|---|---|---|
| HDMI | Input/Output: 5m/10ft | 1080P@60Hz 24bpp |
4K@30Hz 4:4:4 24bpp
4K@60Hz 4:2:0 24bpp
Input/Output: 3m/10ft| 4K@60Hz 4:4:4 24bpp
Trouble Shooting
Steps of Regular Troubleshooting Routine
- Power: Please make sure all devices are powered on. (source, switcher, display devices).
- Devices: Please make sure the picture can be shown normally when connecting the source to display devices directly.
- Cable: Plug in and out the HDMI/USB cable or try another HDMI/USB cable.
- Compatibility: Please test other sources and display devices to determine whether it is a compatibility issue.
Typical Questions:
-
Power: The switcher is not powered on.
Please ensure the power button on the front panel is pressed to turn on the switcher. -
Video:
a. The video can’t be switched.
Please ensure the switcher is set to KVM mode. If it is in USB mode, only the connected USB devices can be switched.
b. USB devices aren’t connected to the input source currently displayed.
Please ensure USB Host and HDMI In ports in a group are connected to the same PC. -
Hotkey: The hotkey function is disabled.
Please ensure the keyboard is connected to the USB port, especially for the keyboard (USB 1.1 port).
Warranty
Products are backed by limited 1-year parts and labor warranty. For the following cases, AV Access Technology Limited shall charge for the service(s) claimed for the product if the product is still remediable and the warranty card becomes unenforceable or inapplicable.
- The original serial number (specified by AV Access Technology Limited) labeled on the product has been removed, erased, replaced, defaced or is illegible.
- The warranty has expired.
- The defects are caused by the fact that the product is repaired, dismantled, or altered by anyone that is not from an AV Access Technology Limited authorized service partner. The defects are caused by the fact that the product is used or handled improperly, roughly, or not as instructed in the applicable User Guide.
- The defects are caused by any force majeure including but not limited to accidents, fire, earthquake, lightning, tsunami, and war.
- The service, configuration, and gifts are promised by the salesman only but are not covered by the normal contract.
- AV Access Technology Limited reserves the right to interpretation of these cases above and to make changes to them at any time without notice.
Thank you for choosing products from AV Access.
AV Access Technology Limited
Documents / Resources
| AV
Access 4KSW21-DM 2 x 1 Dual-Monitor KVM
Switcher
[pdf] User Manual
4KSW21-DM 2 x 1 Dual-Monitor KVM Switcher, 4KSW21-DM, 2 x 1 Dual-Monitor KVM
Switcher, KVM Switcher, Switcher
---|---
| AV
Access 4KSW21-DM 2 x 1 Dual Monitor KVM
Switcher
[pdf] User Manual
4KSW21-DM 2 x 1 Dual Monitor KVM Switcher, 4KSW21-DM, 2 x 1 Dual Monitor KVM
Switcher, Monitor KVM Switcher, KVM Switcher, Switcher
| AV
Access 4KSW21-DM 2 x 1 Dual-Monitor KVM
Switcher
[pdf] User Manual
4KSW21-DM, 2 x 1 Dual-Monitor KVM Switcher, KVM Switcher, 2 x 1 Dual-Monitor
Switcher, Switcher, 4KSW21-DM Switcher