Good Office Helper: Perfect for Laptops such as ChromeBook, VivoBook, HeroBook, IdeaPad and other computers without a numeric keypad, mini keyboard helps to enter numbers more conveniently and get your job done so much quicker Wide Range of Applications: USB digital number keyboard is plug and play, easy to use, suitable for home, office, school, accounting firm, Internet cafe and other places where you need to use laptops, notebooks, desktop computers, PC 15 ° Tilt Design Numpad Keyboard: The ergonomic tilt design increases the comfort of use and helps reduce stress, ideal for those who deal with spreadsheets, accounting documents or financial applications Compact Design: Mini size numeric keypad takes little space, very convenient to put in a bag or file bag. Silent key typing and comfort feeling, slip and fall proof base Compatibility: Supports almost all operating systems. Works fine with Laptops, PC and desktop computers that have Windows 2000, XP, Me, Vista, or Windows 7/8/9/10/98 & MacBook OS X V10 6 operating systems.【NOTE: NOT fully compatible with Macbook OS system. Number keys part works fine, but the Function keys do not work】