USB 2.0 active repeater cable is a bus powered extension cable that can be used to increase the length of a device cable without signal loss and potential performance problems. USB limits a cable s length to 16 feet. Any length above 16 feet requires the use of an active repeater that has a signal booster built in. The overall cable length can be extended up to 75 feet by daisy chaining up to 5 of these repeaters.