Are there graphics cards with multiple HDMI 2.1 ports, preferably 4 ports? - Quora
HDMI 2.0 Video Capture Card with Video Loop Output with Auido Input and Output USB 3.0 - China Video Capture Card and Video Capture price | Made-in-China.com
The Best HDMI 2.1 Cables for RTX 3090 and 3080 Graphics Cards