1、20KM VIDEO TRANSMISSION: Transmit HD Multimedia Interface video and sound signals over a long distance of up to 20km via a pair of optical fibers; support HD uncompressed video signal resolution up to 4K 60Hz. 2、SUPPORT MULTIPLE MODES: 4K KVM HD Multimedia Interface fiber extender is able to simultaneously TX and RX support video loop out; support multiple modes EDID, able to match multiple display devices. 3、1200‑115200 BPS: Support USB KVM, able to operate remotely with keyboard and mouse; support bidirectional independent sound transmission; support bidirectional RS232 serial data transmission with baud rate of 1200‑115200 bps. 4、BIDIRECTIONAL WIDEBAND IR TRANSMISSION: 4K KVM HD Multimedia Interface fiber extender supports bidirectional wideband IR transmission, and is able to automatically recognize and configure various display modes. 5、AUTOMATIC EQUALIZATION SYSTEM, PLUG AND PLAY: KVM HD Multimedia Interface fiber extender built in automatic equalization system, fluent, clear and stable picture; simple and convenient installation, plug and play, no need to setup. Item Type: 4K KVM HD Multimedia Interface Fiber Extender Material: Aluminum Alloy Size: Approx. 94x72x26mm / 3.70x2.83x1.02in Color: Black 1 x HD Multimedia Interface Transmitter 1 x HD Multimedia Interface Receiver 2 x Plugs 1 x Cord 2 x RS232 Terminals