AOC B2 22B2AM Computer Monitor 54.6 cm (21.5") 1920 x 1080 pixels Full HD LED Black Total storage capacity___512 GB horizontal 67 horizontal 67 4 GHz Scrolling directions Vertical Number of scroll wheels 1 Silent click No Button functions DPI switch Number of movement resolution modes 2 Customizable movement resolution Yes Movement resolution 1600 DPI Buttons type Pressed buttons Buttons quantity 4 Scroll type Wheel Movement detection technology Optical Device interface RF Wireless Purpose Office Design Material Acrylonitrile butadiene styrene (ABS) Surface coloration Monochromatic Product colour Black 3 W Energy efficiency scale A to G Energy efficiency class (SDR) E Energy consumption (SDR) per 1000 hours 16 kWh Design Market positioning Home Heavy metals free Hg (mercury) Feet colour Black Certification True Product colour Black Front bezel colour Black Frameless design Yes Detachable stand Yes Exterior finish type Textured Camera Built in camera No Ports & interfaces Built in USB hub No Headphone out Yes DVI port No VGA (D Sub) ports quantity 1 HDMI ports quantity 1 Audio input Yes Headphone outputs 1 Headphone connectivity 3 5 m Sustainability Sustainability certificates ENERGY STAR Logistics data Harmonized System (HS) code 85285210 Other features Height (without stand) 29