1. Equipped with: Left mouse button, mouse wheel, right mouse button, touch keys for cursor movement. 2. Easy to use: the cable length is 1M, which is convenient for customers to job, easy to operate, easy to use and plug and play. 3. Wide applications: wide range of applications, suitable for design companies, engineers, individual DIY enthusiasts. 4. Detachable: Using advanced production technology, removable, store only the cap. 5. Applicable scene: with fine workmanship, suitable for IBM laptops and is the perfect laptop accessory. Specification esification: Item Type: Keyboard Trackpoint Material: PCBA Working voltage: 1.5v Operating current: Photoelectric resolution: 1600dpi Connection Type: USB Input: 5v 100ma USB cable length: approx. 1 m / 1.1 yd How to use: Connect and play Packing List: 1 x Keyboard Trackpoint