This 2x2 Dual Monitor KVM provides you with great flexibility in integrating cross-platform computer equipment easily. You can simultaneously output two HDMI ports of one PC to two HDMI monitors, or you can select HDMI signal of two PCs to output to both displays at the same time. You can control the Dual Monitor KVM with front-panel buttons, IR remote control and keyboard hotkeys.
 The 2x2 Dual Monitor KVM support only a set of keyboard & mouse and 2 monitors to control 2 PCs. Supports switching between keyboard and mouse and external devices and audio channels using hotkey commands without switching screen order. Supports USB 2.0, you can even attach USB 2.0 hub , USB drive, printer, barcode scanner or other USB devices to the Dual Monitor KVM. With EDID emulators in each input port, keep PCs always having correct display information, prevent display settings changed while switching input ports.

• Using only 1 set of keyboard, mouse and 2 monitors to control 2 computers.
• Support hot plugging, connect or disconnect devices to the KVM at any time without turning off devices.
• Support front panel buttons, IR signals, keyboard hot keys to control the KVM.
• Available to use keyboard and mouse without any delay after switching computers.
• Support resolution up to 3840*2160@60Hz.
• l With extra standard USB 2.0 hub port, it is possible to connect bar code scanner, USB hard drive or other USB devices to KVM.
• With EDID emulators in each input port , keep PCs always having correct display information.
• Support keyboard and mouse pass through mode to improve KVM compatibility 

Support Unix/Windows/ Debian/ Ubuntu/Fedora/ MacOS X/ Raspbian/ Ubuntu for Raspberry Pi and other Linux based systems

• 1 * 2x2 Dual Monitor HDMI KVM Switch
• 1 * DC 12V Power Adapter
• 2 * KVM Cables
• 2 * HDMI Cables
• 1 * IR Remote Control
• 1 * User Manual 

This product requires each input device has 2*HDMI port + 1*USB-A port. And each monitor needs to have an HDMI port. You may need the extra adapter or docking station if you do not have the RIGHT ports.
 We also have the following dual-screen models so you can make the correct choice for your computer's port type:

• HDK0402A1U--HDMI&DP port dual monitor KVM switch
• HKV0402A1U--HDMI&VGA port dual monitor KVM switch
• HCK0402A1U--HDMI&USB-C port dual monitor KVM switch
• PCK0402A1U--DP&USB-C port dual monitor KVM switch

 Please contact online service workers to get professional suggestions if you are not sure how to choose a proper product.

Yes. Within 30 days of the product received date you may return products purchased at TESmart online store for a full refund of your purchase price. Products must be returned in their original condition and packaging with all included parts. Please refer the details to: https://www.tesmart.com/pages/refund-policy.

• 1 * 2x2 Dual KVM Monitor
• 1 * DC 12V Power Adapter
• 2 * KVM Cables
• 2 * HDMI Cables
• 1 * IR Remote Control
• 1 * User Manual 

Here are some common reasons why this happen：

Cable issues:

1)Loose cable connection -- try reconnecting the cable and make sure the cable connection is secure.
2)Bad cable -- try testing this cable directly on the monitor to confirm that the connection is working outside of the KVM.

Port issues:

1)Bad KVM port -- Test the faulty port on the KVM with another computer that is known to work with the KVM.
2)Bad computer port -- on the computer side, swap test with another computer that can work with the KVM, if available.
3)Desktop with Graphic Card -- If your computer is a computer with a discrete graphics card, make sure that the video signal cables from all input sources are connected to your discrete graphics card.

Generic adapter/converter issues:

If you are using an adapter/converter that is connected to the stream, this is often a point of failure. We know that not all adapters will work well in a KVM environment, make sure you choose the correct FROM and TO connections.

There are 3 troubleshooting actions that you can try if some but not all of the ports and your computer are working with the KVM switch. 

1.To determine if a specific cable is the source of the problem--Switch the cables that connect the KVM switch to the computers to one working port and computer, and one port and computer that is not working. Keep the computer plugged into the same ports and only switch the cables. If the issue persists when you switch cables, the issue may be with the cable itself.

2.To determine if the problem is between the computer and the KVM switch, using the same cables, connect the KVM switch to one computer that is working and one computer that is not working. If the issue persists when you switch computers, follows the issue may be with the computer and the KVM switch.

3.Try reinitializing the KVM. This is done by following the setup instructions on the manual.