HTA-TTP111VGA Passive VGA Extension kits over CAT5 cable, 150ft. 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