wireless numeric keypad 18keys portable number numpad with 2.4g mini usb receiver for laptop notebook, desktop, surface pro, pc- black cimetech </p><p>numeric key mode, "enter" shows the results of calculation, "=" can be used for simple function calculation. </p><p>function key mode, "save" shortcut keys can save the editing data in time, you can enter these two "bracket" keys to facilitate mathematical calculation. </p><p> simply plug the usb receiver into an available usb port of your computer and it ready to use, no driver needed. </p><p> ergonomic design, thin and compact keypad in a laptop bag or briefcase to efficiently enter data wherever you go. </p><p> the blue led indicator on top left corner indicates whether it ready for data entry or not model compatibility: windows-based pcs system requirements: windows xp, windows vista, windows 7, windows 8, usb port to operate. </p><p>specifications: *usb-enabled for plug-n-play use *operating distance of 33' for gaming experience *18 keys numeric keypad *8 million strokes keys witch life * material: abs * operation frequency: 2. 4ghz technology * power supply: 1*aaa battery not included package included: * 1 x 18 keys wireless numeric keypad