ViewSonic TD2210 Black 21.5 Resistive (2 touch point) Touchscreen Monitor 350 cd/m2 DC 20,000,000:1 (1,000:1) Built-in Speakers Recommended Resolution: 1920 x 1080 Brightness: 350 cd/m2 Contrast Ratio: DC 20,000,000:1 (1,000:1) Response Time: 5ms (GTG) Input Video Compatibility: Analog RGB, Digital Connectors: D-Sub, DVI-I, USB2.0 Type A, USB2.0 Type B D-Sub: 1 DVI: 1 x DVI-I