4 computers share 4 USB devices:Easily connect peripherals such as keyboard, mouse, printer, USB flash drive, scanner, camera, etc., switching with one click without frequent plugging and unplugging. 4 USB 3.0 Inputs + 4 USB 3.0 Expansion Ports:Hi-Speed USB 3.0 interface with data transfer speeds up to 5Gbps, backward compatible with USB 2.0/1.1. Supports a variety of switching methods:Is equipped with top button switching + infrared remote control switching, flexible operation, easy to use. Extra Power Supply Port (Micro-USB 5V):Provides stable power supply for high power devices (e.g., removable hard drives, printers, etc.) to more stable operation. Plug and play, no driver required:Compatible with for , for OS, for Linux and other systems, no additional drivers required, plug and play. Power supply: 2xAAA batteries (not included) Widely compatible with a wide range of USB devices:Supports USB flash drives, mechanical keyboards, gaming mice, printers, cameras, laser printers and many other devices. Color: Black Material: ABS Package Contents: 1 x USB 3.0 switcher 4 x USB 3.0 A-A cable 1 x IR remote control 1 x Micro-USB power cable 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.