Easy to setup, plug and play USB number pad is the easy way to expand your keyboard and increase your productivity | Numeric keypad is perfect for quick and painless data entry Three color backlight can be set to solid or color cycle options | Color options are red, purple and blue with each having the option to be dimmed depending on preference Ergonomic and durable full size numpad features full size keys for a comfortable and familiar experience | Keypad features both backspace and tab keys to assist in data entry Compatible with Windows XP / Vista / 7 / 8 / 10, Mac OS 9, OSX, macOS and Linux (including Chromebooks) | Requires available USB port for use Package Contents: 1x USB Wired Number Pad, 1x Manual 1495Perfect after-sales service: If you have any quality issues or do not like it after receiving it, please contact us and we provide free return and exchange services