The Hall Research Technologies Model U97-Ultra-2B-R Receiver is part of the U97-Ultra-2B kit and is used to extend Dual Display PC Video, Stereo Audio (amplified or line level), RS-232, and up to 3 independent USB ports to a remote location up to 500 feet away on any Category Cable (CAT5e/6 etc). This product is a wall-mountable Receiver Unit that connects to the Model U97-Ultra-2B-S rack-mountable Sender. Both the Sender and Receiver can be purchased as a kit as a Model U97-Ultra-2B.