Tripp Lites 4-Port USB 2.0 Printer/Peripheral Sharing Switch lets you conveniently share a printer, scanner, external hard drive, etc, among four PCs. Quickly switch between computers using keyboard hot-keys, mouse, or manually. Plug-and-play functionality makes installation a breeze. Icon task bar indicates switch status at a glance, and LED's display which computer is active. Power drawn through the USB cables eliminates the need for seperate AC adapter.