The HDMI port on your TV carries high-definition video and sound through a single cable, connecting devices like set-top boxes, gaming consoles, and soundbars. The version matters most: HDMI 2.1 supports 4K at 120Hz, while older HDMI 2.0 tops out at 4K at 60Hz.
- HDMI 2.1 handles 4K at 120Hz and 8K at 60Hz — best for next-generation gaming consoles
- HDMI 2.0 handles 4K at 60Hz — fine for regular streaming and everyday viewing
- HDMI eARC on one port sends high-quality audio to a soundbar or home theatre
- Most TVs carry three to four HDMI ports; check how many support 2.1
- One cable replaces separate video and audio connections