Tripp Lites U224-4R4-R 4-Port Remote USB 1.1 Hub can be located up to 150ft away from the source computer. Simply plug the USB transmitter into the USB Type A port on the computer, and run the Cat5e/Cat6 cable length of your choice, up to 150ft. An included AC Adapter supplies power to the USB hub at the remote end. No drivers or software required completely plug-and-play.
USB Ethernet Extender