Bidirectional switch, 2 in and 1 out or 1 in and 2 out.One computer can hold 2 USB flash drives without plugging or unplugging, and hardware switching is isolated to prevent USB flash drives from communicating with each other.The switch is a for sharing 2 USB devices between two systems, Perfect for sharing a printer or scanner in a small office environment.One-click switching, sharing mouse and keyboard.Plug and play, no driver required. Works without power supply and takes power from USB port.Supported systems: Applicable to Windows ME/98/XP/2000/7/8/10/Vista/MacOS 8.6 or above.type:B: 1 x USB 2.0 Switch SwitcherColour:blackMaterial:ABSSize: 45 x 55 x 22mmPackage Contents:1 x USB 2.0 Switch SwitcherOnly 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.