1. Displayport KVM Switch Dual Monitor: 2 computers sharing one set of keyboard & mouse, 2 monitors, audio, and 2 pcs USB 2.0 peripheral devices. (Tips: 1. It supports DP 1.2 and DP 1.4 versions at 4K 60Hz refresh rate only. Please set your devices to 4K@60Hz before using them. 2. This KVM switch required each of your computers with 2 video output or multi-video output. 3. This item without EDID simulation.) 2. Dual Monitor KVM Displayport: Four optional switching ways: Hotkey switching(Num Lock + Num Lock + 1 / 2 + Enter, or Ctrl + Ctrl + 1 / 2 + Enter, or Scroll Lock+ Scroll Lock+1 / 2 + Enter), mouse switching (click mouse wheel 2 times), manual button switching, wired remote push button switching. Suport three display modes: extended display, mirror display and splice wall display. 3. Displayport KVM Dual Monitor: Support wired/wireless/unify/Bluetooth keyboard/mouse, Apple keyboard (hotkey is changeable), touch screen, OLED screen, 16:9 widescreen, 21:9 ultra-wide monitors, etc. (Bluetooth keyboard/mouse should with a receiver, it doesn't support built-in Bluetooth keyboard/mouse) 4. Displayport KVM Switch 2 Monitors: Max resolution up to 4096x2160@60Hz 4:4:4, compatible 3840x2160@60hz, 3840x1620@60Hz, 3440x1600@60Hz, 3440x1440@60Hz, 3840x1080@240Hz, 3200x1800@60Hz, 2560x1440@60Hz, 2048x1536@60Hz, 2048x1280@60Hz, 2048x1080@60Hz, 1920x1200@60Hz, 1920x1080@60Hz and lower resolution. Drive-free for Windows 11/10/7/2000/XP/Vista, Linux, Mac, Debian, Ubuntu, Fedora, Raspbian, Ubuntu, etc. 5. KVM Switch Dual Monitor Displayport: Support auto-detection, waking up, and auto scan mode for monitoring all computers/Macs/laptops. Build-in memory function in case of a power outage. Metal case body with a premium finish, space-saving design with non-slip foot pads. If you meet monitor flicker issue, please contact us on Amazon, and we will send you the Displayport 1.4 cables with magnetic ring, it can solve the issue. 6. If only one computer is BIOS-based, start by turning it on, logging in, and waiting for the display. Switch to the second computer and turn it on. If both computers are BIOS-based, start the KVM, then the first BIOS computer, log in, wait for the display, switch the KVM to the second computer, and finally, turn on the second BIOS computer. In short, don't start both BIOS computers simultaneously to avoid issues like a black screen or disabling your keyboard and mouse.