The Model AC504A is a UTP (CAT5) VGA video extender consisting of a transmitter (AC504A-S) and a receiver (AC504A-R) sold together as a pair. The transmitter converts a PC's VGA signal into a format that can be transmitted using a single inexpensive and commonly available Category-5 Unshielded Twisted Pair (UTP) cable with RJ45 connectors, which is used in most Local Area Networks. At the receiving (remote) end the Cat5 signal is converted back to VGA for connection to your monitor, projector or other display device. The transmitter and receiver are each housed in a small plastic enclosure and include a HD15 video connector and a RJ45 connector for the Cat-5 cable. Included with the pair of devices are: one small universal power supply (can be powered at either end), and a short adapter cable for easy connection to the standard HD-15 connector of the PC. The Mini-CAT5 Extender can drive CAT5 LAN cables to 500 feet (150 meters) with excellent video quality.