VGA connector to shielding RJ45 female*2pcs. Passive, no power need. Up to 135 meters via standard 4 pairs CAT 5 STP cable instead of VGA cable. Supports up to 1,280 x 1,024 pixels. Work with desktop PCs, laptops, LCD projectors, plasma displays. Perfect for classrooms, lecture halls, tradeshows, video information displays...etc.