Display Size : 21.5 Inch Aspect Ratio :16:9 Brightness : 250 cd/m² Input Terminal : 1 VGA, 1 DisplayPort 1.2 1 DisplayPort 1.2 (with HDCP support) Recommended Resolution :1920 x 1080 Contrast Ratio : 5000000:1 dynamic Response Time : 8 ms Power source - AC/DC adapter : Input voltage: 100 to 240 VAC 28 W (maximum) 24 W (typical) 0.5 W (standby)