Certificated by FCC, CE. Built-in surge/Lightning protection -Superior ESD protection: +/- 8KV (Air-gap discharge) +/- 4KV (contact discharge); 3 Year Warranty, and easy-to-reach friendly customer service (AV Access). ?! ! ? ' ; when connecting 2 or above USB devices to the receiver, please make sure that each port`s power consumption is less than 5V 0.5A. ? ?No video loss, no time delay, with one way PoE(from transmitter to receiver), RS232 pass through over HDBaseT; DIP switch for EDID management; USB 2.0 pass through,1 x USB-Host connector built in transmitter and 4 x USB-Devices connector built in receiver;. ?- . ?It provides remote source PC control with keyboard and mouse, interactive display operation, data transmission and USB streaming over distances up to 330ft/100m. High-speed USB 2.0 up to 480Mbps pass through over HDBaseT with zero delay. ?@ @ ?With the HDBaseT 2.0 uncompressed technology, the device can extend 4K@60Hz ultra HD (YUV4:2:0 8bit) HDMI signal over single Cat 5e/6/6a/7 cable up to 330ft/100m. With audio input/output ports both on transmitter and receiver, it also supports bi-directional 3.5mm stereo pass through.