One button exchange between 2 computers. Convenient and efficient, 2 computers share 4 USB devices, plug and play.Devices such as HDDs and digital video cameras may require an external power supply to operate. When using high-power equipment, make 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 controlled.size: 99x50x14mmMaterial:ABS+metalcolour:BlackPackage Contents:2 x KVM Switch4 x USB CableOnly the above package content, other products are not included.Note: Light 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.