Startechcom hdmi over cat5 video extenders startechcom st121shd30 the startechcom st121shd30 hdmi over cat5ecat6 video extender kit lets you extend hdmi audiovideo and an ir remote control signal by up to 30m 100 feet over dual cat5e or cat6 cable for added versatility this hdmi extender kit is powered via the hdmi bus and does not require any additional power adaptorwith support for high definition resolutions of up to 1920x1080 1080p and the accompanying digital audio this cost