1. Compact Size: The trackpad has a compact size of 99.97x83x12.6mm and the touch panel size is 60x45mm 2. 2 Buttons: The USB touchpad has 2 buttons, which have left and right mouse button functions respectively 3. USB Interface: The computer touch pad has slide, touch, scroll and zoom functions. Plug and play USB interface, no driver required 4. Embedded Design: The mouse touchpad is embedded design with screw holes on both sides compatible with easy fixing and long service life 5. Scope of Application: The portable trackpad is a wired touchpad with a 1.4m long cable. Compatible with laptops, desktops, all in . commercial use, industrial use Item Type:Trackpad Product Size: . 99.97 x 83 x 12.6mm / 3.9 x 3.3 x 0.5in Touch Panel Size: . 60 x 45mm / 2.4 x 1.8in DPI: 400 to 600DPI Line Length: 1.4meters/1.5yd Interface: USB Rated Value: 5V Working Method: Connect the Interface to a Terminal Instrument Such As a Computer, Click the Touchpad, the Cursor Move with the Sliding of the Finger, with the Functions of the Left and Right Buttons of the Mouse Color:Black Material:ABS Package Contents: 1 * Touch Pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.