This allows a computer to share 2 USB device such as printer, scanner, mouse, keyboard, card reader, flash drive and other USB devices.The USB 3.0 switch selector supports ultra-fast USB 3.0 data transfer and is backward compatible with USB 2.0 and USB 1.1 devices. Save your time and increase efficiency.The USB 3.0 switch is suitable for a computer, sharing 2 USB 3.0 peripheral device. For example, two computers can share 1 printer. Good helper for work Compatible with most USB devices: keyboards, mice, USB printers, scanners,USB drives, card , etc. Can be used in workplaces such as: control rooms, offices, libraries, schools.Small and portable, Easy to carry Lightweight and ,it doesnt take up too much space and makes the computer desktop more tidy.type: allocatorInterface: USBColour:blackMaterial:plasticSize:58 x 47 x 17mmPackage Contents:1 x Switch2 x USB CableOnly 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.