Dual Monitor USB 3.0 HDMI KVM Switch for 2 Computers You can easily have a dual monitor setup per system or a single monitor showing both systems (one on each monitor) Dual monitors output support up to 4K@60Hz for extended,mirrored or spliced display（Depends on your computer's graphics card） With EDID emulators in the extended display mode, keep PCs always have correct information, prevent displays setting change while switching inputs 2 Switching modes: Button switch and wired remote. With extra 3* USB3.0 and Audio Microphone output, The ports that need to plug in HDMI/USB cables are all hidden behind the KVM, so the desktop doesn't get cluttered Compatible with Windows 10/7/2000/XP/Vista, Linux, UNIX, Ubuntu, Fedora, and other systems installation steps: 1. Insert the DC/5V adapter into the KVM ;2. Plug the HDMI cable into the KVM and monitor;(HDMI Output)3. Plug the HDMI cable and USB cable into the KVM and your computer/laptop (HDMI cables are not included)(Input)HDMI IN1 A + HDMI IN1 B + USB IN1=PC1HDMI IN2 A + HDMI IN2 B + USB IN2=PC24. Insert the mouse and keyboard into the KVM switch5. If needed, you can connect a microphone and audio port Note： 1. Most of the reasons why only onevideo output works is because of incorrect connection. Please make sure eachcomputer have 2 HDMI cables connect to the KVM.2. If the KVM switch does not work, you can turn off the switch on the panel and turn it on again after 2-3 seconds, and it will return to normal. Display Mode 1: Mirror/Copy Display; Extended Display; Surround/Splicing Display How to switch: 1:Press the button to switch from PC1 A to output A, and frorm PC1 B to output B 2:Press the button to switch from PC2 A to output A, and frorm PC2 B to output B Display Mode 2: 2 computers one-to-one corresponding display, Criss-crossing Display How to switch: 3:Press the button to switch from PC1 A to output A, and from PC2 A to output B 4:Press the button to switch from PC1 A to output B, and from PC2 A to output A Supports high resolution up to 4K@60Hz and downwards. Note: Only when both your computer Graphics card and monitor support 4K@60Hz then you can get 4K@60Hz effect, so if you want the max resolution you have to check your devices first. 3 USB 3.0 ports, backward compatible with USB 2.0 and USB 1.1, share USB devices such as keyboard mouse scanner, printer, flash drive, etc. Support EDID Lock Screen Dual monitor KVM switch can simulate the EDID of the display, when the monitor is switched between two computers, the original window order will not change.