Product Description: This product can control multiple computers through a set of mouse, keyboard and display. It is easy to operate, improve work efficiency and save cost. Features: 1. Support hotkey switching 2. Support infrared remote control switching 3. Support for remote control button switching 4. Support U disk read and write 5. Support LED switching channel indication 6. Support most mouse and keyboard on the market Product Parameters: 1. Applicable systems Windows, Apple, MAC Linux, Netware, Unix 2. Input port: HDMI& USB-A 3. Output port: HDMI 4. Control port: USB-A 5. Read and write port: USB-A 6. USB port version: USB2.0 7. HDMI port version: HDMI2.0 8. The highest resolution: 4K@60HZ The product supports three switching methods: 1. Hotkey switch 2. Remote control switching 3. Line control button switching Hotkey switching operation instructions: Option One. 2. Switch to the first computer: press and hold the keypad "*", then press and hold "1" and then release 3. Switch to the second pair of computers: press and hold the keypad "*", then press and hold "2" and then release Option Two: 1. Switch to the first computer: Press and hold "CTRL" and "ALT" at the same time, then press "1" to switch to the second computer 2. Switch to the second computer: Press and hold: "CTRL" and "ALT" at the same time, then press "2" Reset: Click "CTRL" "CTRL" "R" consecutively