DELL MS3220, Ambidextrous, Laser, USB Type-A, 3200 DPI, 2 ms, Gray, Titanium DELL MS3220. Form factor: Ambidextrous. Movement detection technology: Laser, Device interface: USB Type-A, Movement resolution: 3200 DPI, Response time: 2 ms, Buttons type: Pressed buttons, Buttons quantity: 5, Scroll type: Wheel, Acceleration (max): 4 G. Power source: Cable. Product color: Gray, Titanium