Goldtouch GTC-0077 Numeric Keypad (Black) USB Windows Soft key touch: Experience satisfying tactile feedback and easy access to essential calculation keys. A great complement to the Goldtouch Adjustable Comfort Keyboard, allowing for optimal mouse and keypad placement within arms reach. Plug and play compatible with Windows 2000, XP, Vista, and Windows 7, 8 and 10  no driver installations required. Easy access to essential number keys, frequently needed symbols, and calculator functions.