1. Monitor Switch for Multiple Computers: 4 computers/Mac/laptops/DVRs/NVRs sharing one set of keyboard & mouse, 1 monitor and 2 pcs USB 3.0 peripheral. With digital audio output, with all input port cables. Support wireless/wired keyboard & mouse, Apple keyboard (hot key is changeable), unify keyboard, touch screen, OLED screen, wide screen, etc. 2. 4K KVM for Mac: We are certified HDMI adopter over 10 years. Excellent image processing and transmission capacity, make the output signal more smoothly and steady. Support HDMI 2.0, HDCP 2.2, EDID, HDR10. 3. USB KVM Switch 4 Computers: Four switching way optional: Hotkey switching(Num Lock + Num Lock + 1 / 2 / 3 / 4 + Enter, or Ctrl + Ctrl + 1 / 2 / 3 / 4 + Enter, or Scroll Lock+ Scroll Lock+1 / 2 / 3 / 4 + Enter), mouse switching(click mouse wheel 2 times + left button / right button), manual button switching, wired remote push button switching. 4. KVM Switch USB KMV Switches: Resolution compatible 4096x2160@60Hz, 3840x2160@60Hz, 3840x1620@60Hz, 3440x1440@60Hz, 3840x1080@60/120Hz, 3200x1800@60Hz, 2560x1440@60/144/165Hz, 2048x1536@60Hz, 2048x1280@60Hz, 2048x1080@60Hz, 1920x1200@60Hz, 1920x1080@60Hz, etc. Drive-free for Windows 10/7/2000/XP/Vista, Linux, Mac, Debian, Ubuntu, Fedora, Raspbian, Ubuntu, etc. 5. KVM USB HDMI Switch: With a DC5V 2A power adapter, power supply more stability. It can switch by mouse or keyboard independently, even without USB signal input, such as Apple TV, Android TV box, etc. And it can enter into BIOS interface directly.