Lenovo ThinkVision E20-30 19.5 inch TN Monitor – Resolution: HD (1600 x 900), Contrast Ratio: 1000:1, Response time (typical): 5 ms (Gray to Gray), Aspect Ratio: 16:9, Brightness: 250 cd/m², Refresh Rate: 60Hz, Connectivity: 1x VGA (D-Sub) , 1x HDMI 1.4, VESA Compatible: 100 x 100 mm, Retail Box , 1 year warranty