C2G HDMI HDBaseT + 3.5mm, USB-B to A, and RS232 over Cat Extender Box Transmitter to Box Receiver - 4K 60Hz - Video/audio/USB/serial extender - transmitter - HDMI, HDBaseT 2.0 - over CAT 5e/6/6a/7 - up to 70 m

C2G HDMI HDBaseT + 3.5mm, USB-B to A, and RS232 over Cat Extender Box Transmitter to Box Receiver - 4K 60Hz - Video/audio/USB/serial extender - transmitter - HDMI, HDBaseT 2.0 - over CAT 5e/6/6a/7 - up to 70 m is available to buy in increments of 1