LG 22SM3B-B 22 SM3B Series Standard Essential Commercial Display Aspect Ratio: 16:9 Brightness: 250 cd/m2 Contrast Ratio (Typical): 1,000:1 Dynamic Contrast Ratio: 4,000,000:1 Viewing Angle: 178°(H) / 178°(V) HDMI Port: 1 USB Port: Yes Other Ports: RGB(1) PC Audio In RS232C, IR receiver, Pixel Sensor