4K60 444 4x4 HDMI Matrix with Audio Outputs HDMI 2.0. Support Audio Mute. 4K-1080P Downscaler for Each HDMI Output 4K@60Hz 444 All HDR. Rich Control: RS-232, IR, Web UI and Front Panel Buttons. EDID Management. S/PDIF Audio Breakout. HDCP 2.2 Compliant. Firmware via Both Micro-USB and Web UI.