The USB (Universal Serial Bus) Powered HDMI Voltage Inserter is the ideal solution for a HDMI source device (cable box, DVD player, video game system) that does not provide enough power through the HDMI output for use with HDMI extensions, switches, splitters or other HDMI devices that rely on power from the HDMI output port of the source. Not using a voltage inserter in this application will cause a voltage drop & the video quality is affected, or worse, there is no video at all. This voltage inserter isolates the power from the source device & it provides 5 Volts & 1 Amp of dedicated power to give the crisp, clean signal that is expected from high definition equipment. Up to 1080p resolution. Instructions for use: Connect the voltage inserter directly to the source device through the HDMI port. Connect the USB (Universal Serial Bus) cable from the Voltage Inserter to an available USB (Universal Serial Bus) port. Connect a HDMI cable from the voltage inserter to the other HDMI devices. Features Isolates power from a HDMI source device Adds in 5 Volts & 1 Amp of power Supports up to a 1080p resolution