Brand Suckoo RJ45 Network to HD Extender Repeater 30m 4K30HZ 1920x1080P Compatible with computer host laptop graphics card connected TX transmitter external HD monitor TV projector RX receiver 1 pair use This RJ45 network to HD extender repeater is to extend HD to 30 meters by 1 single network cable. It is designed to transmit HD audio and video in 4K30HZ and 1920x1080P resolution. It uses RJ45 network interface, which can convert RJ45 network signal to HD audio and video signal and transmit through one transmitter TX and one receiver RX. The device is suitable for connecting input devices such as computer hosts and laptop graphics cards and transmitting the signal to an external HD monitor, TV or projector. This product is sold as a pair and includes a transmitter TX and a receiver RX for reliable HD video transmission. Color: Black Warmly note that this product is a pair and cannot be used for network switches