These adaptors extend your VGA signal with Patch leads. Extend VGA devices by up to 100ft (30m) via these adapters use either CAT5 CAT5E or CAT6 LAN cable. Connect PC laptop DVR Media Center or game console VGA video port to TV projector monitor with available VGA input. If connecting to a TV with VGA PC Input and there is the message unsupported PC Signal check the manual for maximum or fixed resolution of the TV PC input. In most cases it is 1024x768. The other way to test the limits is to lower the PC video card resolution to 800x600 then gradually increase it. Some TV's and monitors require fixed resolution of the video card in order to display picture.