Description : 1. Anti slip, anti fall, not easy to wear, Press the button design, feel comfortable. 2. For notebook users or bank and accounting users who need to use the numeric keyboard in the full-size keyboard, this numeric keyboard is your perfect choice; the numeric keyboard design makes a lot of data input easier, which helps to simplify the work of a lot of data input; the keyboard can move freely, the key sound is light, and the data input is very easy. 3. Convenient, plug and play device, easy to install; this product design uses USB interface specification, specially designed for notebook computer users of the numeric keyboard, you can easily install to your laptop or desktop computer; also can cooperate with USB to PS / 2 interface, easy to install this product to PS / 2 interface. 4. The slim design of this product can be easily put into the briefcase or notebook bag, easy to carry, to meet your mobile computing needs at any time. 5. Supported operating systems: Windows 2000; Windows Millennium Edition; windows XP.Windows Vista,Windows7 Spesification : * Model : K-013 * Applicable models : General * Number of keys : 19 keys * Interface :USB * Whether to support plug and play :Support * Connection with the compute r: wired * waterproof function : does not support waterproof * Key technology : X architecture * Colour : Black+silver * Material : ABS