Quick Facts- Works with the 4-port VGA Transmitter (AC555A-4-R2) to extend V GA video up to 500 feet.- An equalization (gain) control enables you to fine-tune the picture.- Has a 2-kV avalanche diode, which provides greater electrostatic discharge (ESD) protection and more reliable operation.- Connects to two VGA monitors.Further DetailsThis product works with:- VGA Transmitter, 4-Port (AC555A-4-R2)- CAT5 Solid-Conductor Cable (EYN556MS, EYN550MS)- VGA Balun (AC640A)