DisplayPort x 3 (v1.4a),https://www.msi.com/Graphics-Card/GeForce-RTX-4090-SUPRIM-X-24G/Specification#:~:text=HDMI%E2%84%A2%20x%201%20(Supports%204K%20%40120Hz%20HDR%2C%208K%4060Hz%20HDR%2C%20and%20Variable%20Refresh%20Rate%20as%20specified%20in%20HDMI%202.1a)