Advantages: 4 computers/laptops share one set of keyboard, mouse and dual monitors, and more USB 3.0 peripherals; 4 Ports Dual displayport KVM switch with 3 USB 3.0 ports for USB devices, and with extra Audio Microphone output; Dual monitors output support up to 8K@60Hz for extended,mirrored or spliced display(Depends on your computer's graphics card.); Compatible with 11/10/7/2000/XP/Vista, Linux, UNIX, , Fedora, and other systems; Compatibility with all computers and other devices with DP ports. Advanced switching modes: push button and wired remote; The ports that need to plug in /USB cables are all hidden behind the KVM, so the desktop doesn' get cluttered; No complicated installation is required, and non-professionals can easily operate it. Installation steps: 1. Insert the adapter into the KVM ; 2. Plug the 2*Displayport cable into KVM switch and monitor;(Output) 3. Plug the Displayport cable and USB cable into the KVM switch and your computer/lapto(DP cables are not included)(Input) DP IN1 A + DP IN1 B + USB IN1=PC1 DP IN2 A + DPIN2 B + USB IN2=PC2 DP IN3 A + DPIN3 B + USB IN3=PC3 DP IN4 A + DPIN4 B + USB IN4=PC4 4. Insert the mouse and keyboard into the KVM switch 5. If needed, you can connect microphone and audio port Note: 1. Most of the reasons why only one video output works is because of an incorrect connection. Please make sure each computer has 2 DP cables+1 USB cable connected 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. 3. Before purchasing this DP Dual Monitor KVM Switch, please make sure that your computer supports direct connection of two DP monitors to work properly, otherwise the KVM will not work. 4. Note: DP cablesare not included Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Voltage: AC110V Colour: Silver Material: Aluminum Alloy Package Contents: 1x 4 Port USB 3.0 DisplayPort KVM Switch 4x USB 3.0 Cables 1x Power Adapter 1x Wired Button Contorller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.