Features: brand new and high quality 4 Port USB sharing switch allows four USB peripherals devices to be shared between Four computers at the push of a button without constantly swapping cables or set up complicated network sharing software. Improve work efficiency. USB 3.0 2.0 sharing switch made of metal for case, not easy to scratch! No external power supply is required for the for KM switch box. Support for wireless mice and mechanical keyboards. for Ideal for sharing devices such as printer, scanner, mouse, keyboard, card reader, flash drive and other USB devices between 4 computers. Widely use for office or family, monitoring room, financial operator or designer. This is a good sharer switch for data exchange and transmission. Supports 4 USB inputs and 4 USB HUB outputs. Support speed up to 480 Mbps; Backwards for USB 2.0 / 1.1 devices. Plug and for Play, supports for Windows XP / 7/8/10 / Vista, for Mac OS 8.6 and higher. Button and LED indicate lights, you can easily switch between 4 computers by a single click on the button or use the remote cable that comes with the package to switch. LED indicating the active computer. Specifications: Item Type: USB Printer Sharing Converter Material: ABS Color: Black Interface: 4 ports Cable length: approx. 1.5m/59.06in Note: Please connect external power cable first before connected to PCs. Light shooting 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. Package includes: 1PC x USB Switch 4PCS x Usb male to male cable 1PC x Power cable