Most models have between 2 and 4 HDMI ports. Some TVs include an HDMI input that supports eARC — check the model’s specifications to confirm which HDMI port (if any) provides eARC.
Advertised VESA mounting patterns in these listings include 200×200, 200×300, 300×300, and 400×300. Verify the exact VESA pattern on the model’s spec sheet before purchasing a mount.