One button to switch between 2 computers. Convenient and efficient, 2 computers share 4 USB devices, plug and play. Devices such as hard drives and digital video cameras may require an external power supply to function. When using high-power equipment, be sure to use a standard 5-volt adapter for power supply. Strong Compatibility. Plug and play, suitable for Windows 10/8.1/7/Vista/XP and OS X, Linux, and Chrome OS. The LED status indicator accurately shows which computer is being controlled. size: 99x50x14mm Material: ABS+metal color: Black Package Contents: 1 x KVM Switch 2 x USB Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.