Product Description:  Brand AOC  Model AOC I2281FWH  Display Size 21.5″  Shape Wide Screen Monitor  Display Type Ultra Slim FHD Display  Touch No  Display Resolution 1920×1080 (WxH) FHD  Brightness 250cd/m2  Contrast ratio 1000:1 (static), 50M:1 (dynamic)  Response time 4ms  Refresh Rate 60Hz  VGA port 1  HDMI port 1  Viewing Angle 178 degree (H & V)  Color Regular  Others Color: Black, Panel: IPS, Backlight: WLED, Active Screen Area: 477.5×268.5 mm, Pixel Pitch (H) (V): 0.248, Display Colours: 16.7 Million, Scanning Frequency: 30-83khz/50-76hz, Audio output: Headphone out (3.5mm), Powersupply: External, Powersource: 100 –  Warranty 3 year