Easy to Use - Our USB wired numpad does not require any driver or battery; easy to install, plug and play, gives you a stable connection. | Quiet & Soft Touch - Integrated ergonomic tilt provides comfortable typing, helps reduce the wrist strain. Low noise of the 19-key USB numeric keypad gives you a quiet and soft touch. | USB Wired Number Pad - Full-size 19mm keys improve speed and accuracy by making it easier to locate and press the numbers you are looking for. Numeric keypad supports NumLock. | Lightweight & Portable - The black numeric keypads are perfect for working on spreadsheet, you can works household, school, business trips, or daily use, very convenient number use. | Wide Compatibility - Compatible for Windows 2000, XP, Vista, or Windows 7/8/10, Android operating systems. Works with PC, desktop, notebook and other devices with USB ports.