Lenovo LI2215 21.5-inch LED Color Monitor (Black) The Lenovo LS2221 Wide is packed with green features including Mercury free by adopting white LED backlights, arsenic-free glass, and is Energy-Star 5.1 and TCO Displays 5.2 compliant. Features and Benefit: Viewable size: 21.5″ (546mm) Native resolution of 1920 x 1080 White LED backlights Aspect ratio: 16:9 Pixel Pitch: 0.248mm Brightness: 250 cd/m2 (typical) Color Gamut 72% Contrast ratio: 1000:1 (typical) Dynamic Contrast Ratio 10M:1 View angles(Horizontal/Vertical, @CR=10:1): 170 degrees / 160 degrees Respond time: 5ms (on/off, typical) Internal Power supply Power consumption (typical/max): 18 watts/30 watts Tilt stand for viewing Comfort Touch OSD Buttons, and Direct access button for automatic image setup and NoVo Vision allows quick and easy monitor setup Compliance with ENERGY STAR 5.1 requirements Kensington Lock slot for security. It Has Only VGA Port with power connection. NO HDMI and DVI port.