Most OLED gaming TVs list three or four HDMI inputs. Product notes often call out high-bandwidth HDMI capability (up to 48 Gbps) and HDMI 2.1–class features such as eARC, which are relevant for high-resolution, high-frame-rate gaming and advanced audio passthrough.
Most listings are 55-inch models, with at least one 42-inch option also appearing. Common VESA patterns shown include 300×200, 300×300, 400×300, 400×400 and 200×200.