Use this HDBaseT extender to extend your HDMI signal up to 330ft. over CAT5 with only a single power adapter Works with HDMI video source devices such as Blu-ray players & cable boxes and HDMI displays Compatible with HDBaseT extension systems HDBaseT extender / HDMI extender / HDMI over CAT5e / Power Over Cable HDMI Extender / HDMI over CAT5e / CAT6 Ethernet Extender Power over cable means the remote receiver doesn't require power so you can extend to areas with limited power outlets