Extend an hdmi video and audio over standard cat5 cabling with support for rs232 serial and infrared control the startechcom hdbaset extender kit extends hdmi up to 330 feet 100 meters over a single cat5e or cat6 cable the extender supports ultra hd and full hd resolutions 4k 1080p with support for 3d and the accompanying 71 digital audio for added versatility the transmitter and receiver can be used to transmit ir and rs232 serial communication over the same cable the versatility