Partial part number 1673A can be found stamped on the board
Uncompressed Transmission - 10G SFP+
Additional Board Numbers: 715G4716-P01-W30-003H
This versatile device allows you to connect 4 PCs and control & switch between them using only 1 set of Keyboard
8K 2-port HDMI™ Switch-BK-21 parts Partial part number 1673A canOREI BK 21: 2x1 8K HDMI Switch Key Features: HDMI 2. 1 and HDCP 2. 3 compliant Support 48Gbps video bandwidth 8K@60Hz 4: 4: 4 8 10 12bit, 8K@60Hz 4: 2: 0 12 bit, 8K@30Hz 4: 4: 4 10 bit, 4K@120Hz 4: 4: 4 10 bit video support Support HDR, HDR10, HDR10+, Dolby Vision, HLG pass through VRR, FVA, ALLM support Support HDMI audio formats: LPCM 7. 1CH, Dolby TrueHD, and DTS HD Master Audio 2x1 switch output, auto switch supported Built in Equalizer and Driver