4k 8 In To 8 Out Audio HDMI Matrix Switcher The 18Gbps 8x8 HDMI Matrix supports the transmission of video (up to 4K2K@60Hz YUV 4:4:4) and multi-channel high resolution digital audio from 8 HDMI sources to 8 HDMI displays. Audio de-embedded to analog and coaxial audio is supported from 8 HDMI output ports. While HDMI output ARC function is enabled, the ARC audio from HDMI display devices will be extracted to coaxial audio output. Each HDMI output of this 8x8 HDMI Matrix supports 4K2K to 1080P down scaler independently. Control is via front panel buttons, IR remote, RS-232, LAN and Web GUI. Dimensions: 440W x 200D x 44.5H mm. Remote requires CR2025 battery.In the Box1 x 18Gbps 8 x 8 HDMI Matrix1 x 12V/5A Power Adapter1 x IR Remote1 x IR Receiver cable (1.5 meters)1 x RS-232 serial cable (1.5 meters, male to female head)2 x Mounting Ear1 x User Manual Features HDCP 1.4 complaint HDMI 2.0b, HDCP 2.2 and HDCP 1.4 compliant Video resolution up to 4K2K@60Hz (YUV 4:4:4) on all HDMI ports Support 18Gbps video bandwidth DolbyVision, HDR10+ and HLG are supported. Support 4K->1080P Down Scaler for each output port HDMI audio pass-through up to 7.1CH HD audio (LPCM, Dolby TrueHD and DTS-HD Master Audio) Audio de-embedded is supported via analog and coax ports ARC, CEC and smart EDID management are supported 1U rack mounted design with front panel OLED display Control via front panel buttons, IR remote, RS-232, LAN and Web GUI KEEP OUT OF REACH OF CHILDREN THIS PRODUCT CONTAINS A BUTTON BATTERY.- If swallowed, a lithium button battery can cause severe or fatal injuries within two hours.- Keep batteries out of reach of children.- If you suspect your child has swallowed or inserted a button battery, immediately call the 24-hour poisons information centre on 13 11 26 (within Australia) and seek medical attention.