Are there graphics cards with multiple HDMI 2.1 ports, preferably 4 ports? - Quora
Ultra HDMI 2.1 Optical cable that works with an NVIDIA RTX 3080 and 3090 and LG OLED B9 and C9 at 120hz 4K 4:4:4 VRR - BeetWing
Graphics Card with HDMI 2.1 Technology: What You Need to Know About the New HDMI UpdateWhat is Graphics Card for Gaming?What is the HDMI 2.1 Specification?