Dell E5515H 55.0-Inch Screen LED-Lit Monitor Convenient: Automatically adjusts the screen to reflect your PC's resolution. Outstanding view: Full HD resolution and consistent colors across an ultra-wide viewing angle. Reliable: Protected by an Advanced Exchange Service and made with eco-responsible materials. 1080p (1920 x 1080) Native Resolution, Built-In Stereo Speakers, ENERGY STAR Qualified Anti-Glare LED Display 3,000:1 Contrast Ratio 350 cd/m2 Brightness, 2 x HDMI / 1 x VGA, 2 x USB Downstream / 1 x USB Upstream Digital Signage Capable, 178 Wide Viewing Angles VESA compatible 400mm x 400mm.