Crucial X9 External solid state drive 2 TB Mechanical key switch 4 GHz Scrolling directions Vertical 4 GHz Scrolling directions Vertical Number of scroll wheels 1 Button functions DPI switch Programmable mouse buttons No 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 Surface coloration Monochromatic Product colour Black Ergonomic design No Form factor Ambidextrous Ergonomics Wireless range 8 m Power Battery type AA Number of batteries supported 1 Power source Batteries System requirements Mac operating systems supported Yes Windows operating systems supported Yes Weight & dimensions Weight 84 g Height 40 mm Depth 95 mm Width 57 mm Packaging content Receiver type Micro receiver Wireless receiver interface USB Type A Receiver included Yes Packaging data Quantity 1 Logistics data Harmonized System (HS) code 84716070 Ukrainian Plug and Play Yes Multimedia Built in speaker(s) No Built in camera No Design Market positioning Gaming Feet colour Silver Product colour Black Mean time between failures (MTBF) 50000 h Exterior finish type Textured Camera Built in camera No Ports & interfaces Built in USB hub No HDMI ports quantity 2 DisplayPorts quantity 1 HDCP Yes Audio output Yes HDMI Yes HDMI version 2 Skip the monthly cloud storage fee and save more of the games videos and files you love with read speeds up to 1