The SX-EX1520 uses Gigabit compression technology to send a visually lossless up to 4K2K image and 8-chanel digital audio across a 1000BT LAN (UHD over IP), also supports the following amazing and practical features: • Limitless A/V Distribution including one-to-one, one-to-many, many-to-one and many-to-many matrix switch. •Video Wall (up to 8x16) •Video Scaler (like 4K in/1080P out, 1080P in/4K out) •Video Rotation for 180/270 degree •KM over IP (for KVM application) •USB over IP (for all kinds of USB HID devices) •Audio over IP (automatically switch off the HDMI audio) • HDMI audio extraction to the line out on Client •RS232 over IP 