Dell P2421D 23.8-inch HD LED Monitor (210-AVKX) - Resolution: 2560 x 1440, Contras Ratio: 1000:1, Response Time: 5ms, Aspect Ratio: 16:9, Brightness: 300cd/m, Refresh Rate: 60Hz, Connectivity: 1 x USB 3.0 upstream, 2 x USB 3.0 (Side), 2 x USB 2.0 (Bottom), 1 x HDMI 1.4, 1 x DisplayPort 1.2, Adjustability: Tilt, Swivel, Pivot, Height, Wall Mountable: VESA (100 x 100 mm)