6 ?Simple Plug and Play?No APP or driver needed. Surface-mountable metal housing provides durability and minimizes EMI/RFI noise interference. Our products are backed with a 1-year limited warranty and experienced tech support team. If you have any questions or concerns, click on our name in the buy box and select "Ask a Question". 5 ?Support Backward RS232? The HDMI Converter support Serial RS232 Signal, you can control the rs232 serial device from remote side. 4 ?UHD Lossless Low Latency?Digital uncompressed transmission, clear image and strong anti-interference ability. Great ideal for applications such as security monitoring, broadcast, video conferencing, multimedia classrooms, high-end medical imaging, interactive digital signage, home theatres, education systems and even industrial automation. 3 ?HDMI Local Loopout?There is an HDMI local output port on the sender, you can connect a monitor locally to preview the effect of HDMI signal. 2 ?USB2.0 Extender?This HDMI USB extender receiver with 4 usb2.0 ports, widely used in USB Headsets, USB mouses and keyboards, printer, HD cameras, mobile phone charging and copying data, mobile storage devices, touch screens, etc. 1 ?HDMI Fiber Extender?Extends 4K HDMI signal to 20KM through a single SM Fiber cable with stereo audio, video, microphone, USB, IR, RS232 extension. No video loss with zero delay, EDID pass-through.