Tripp Lite B130-202A Allows You To Extend Two 1024X768 Vga Video Signals + Stereo Audio Up To 500 Ft., Over Ordinary Cat5E Cable, From A Single Vga+Audio Source. The Transmitter / Receiver Kit Also Features Two Local Vga Hd15 Ports, Supporting A Total Of Four Vga Monitors ( 2 Local And 2 Remote ). Compatibility Issues Can Occur When Edid Information Is Not Properly Communicated Between The Source And The Display. The B130-202A Includes An Edid Copy Feature Which Stores A Monitor'S Edid Information In The Transmitter And Sends It To The Source, Ensuring Optimal Compatibility. Supports All Operating Systems, And Is Plug-And-Play...No Software Or Drivers Are Required.