Use with VGA Receivers to place four VGA monitors up to 500 feet from your PC.Extend VGA as far as 500 feet (152.4 m) to four separate locations over CAT5, CAT5e, or CAT6 cables.Includes a local VGA monitor passthrough port.Has a 2-kV avalanche diode, which provides greater electrostatic discharge (ESD) protection and more reliable operation.For each remote location, add a VGA Receiver, 2-Port Remote (AC555A-REM-R2), which connects to two monitors at each location.