Bidirectional switch, 2 in and 1 out or 1 in and 2 out. One computer can connect to 2 USB flash drives without plugging or unplugging, and hardware switching is isolated to prevent USB drives from communicating with each other. The switch is designed for sharing 2 USB devices between two systems, ideal for sharing a printer or scanner in a small office environment. One-click switching allows sharing of mouse and keyboard. Plug and play, no driver required. Operates without external power supply and draws power from USB port. Compatible with Windows ME/98/XP/2000/7/8/10/Vista, MacOS 8.6 or later. Type: 1 x USB 2.0 Switch Color: Black Material: ABS Size: 45 x 55 x 22mm Package Contents: 1 x USB 2.0 Switch Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement may vary by +/- 1-3cm.