This is the Konig 2-port USB switch [CMP-SWITCH41] Install the USB switch to share one USB device, such as a printer or scanner, with two PCs by pushing one of the buttons to select a PC. The switch can also be used the other way around to operate two devices with a single PC. Please note that the switch only works with USB devices that do not require constant contact with PCs, such as most printers, scanners, cameras, joysticks, PDAs, MP3 players and iPod docking stations. ...Contact us if you need more help.