The HDMI HDBaseT + USB-B to A and RS232 over Cat Extender (18 Gbps) allows for the extension of a 4K HDMI source up to 328' to a 4K display without signal loss using a single CAT6(a) Ethernet cable. This is an ideal solution where USB must also be extended alongside HDMI video and audio to interactive whiteboards and displays or in any installation that goes far beyond the length limitations of standard HDMI and USB cabling.