Generic USB 19 keys Numeric Number Keypad Ultra-thin USB External Wired Mini Keyboard For Laptop Notebook IBM Thinkpad for Laptops / Tablets - Black + Silver Easy to install - no drivers required, plug-and-play. laptops Keys 19 Type External Wired Keyboards Connectivity USB compatible with Windows 2000, 2003, XP, 7; Other Features Needn't to shift. Numeric keypad supports NumLock. Laptop keyboard can input Chinese / English. Ultra-thin and compact, high quality with silent and comfort feeling.