The VI-VGA is a passive ground loop isolators that are widely used to eliminate any noise or interference caused in video displays or projectors using 15-Pin VGA connectors. Noise or hum are often caused because common mode current will flow in a ground loop created by an electrical system that has ground at different potentials.

Just replace your exisitng VGA cable with the VI-VGA between your video source and the display/projector. VI-VGA is designed specifically to reduce hum in analog component RGBHV video signal and vesa digital data channel (VESA DDC) and is capable of supporting any resolution up to 2048x1536. This is a passive device and no power supply is required.