Feature:1. Quick Response: Using sophisticated production technology, the 21 key numeric keypad ensures quick response.2. 21 Key: 21 keys with 17 numeric keys and 4 additional keys including "tab", "esc" and "FN", ergonomically designed.3. Mechanical Numeric Keypad: The 21 keys expand a few keys at the top, including the Esc, Tab, Back Space, and FN keys.4. RGB Backlit: There are multiple backlight modes and 6 backlight brightness adjustments. Press the FN key and another key at the same time to change the backlight and brightness.5. Uses: Suitable for laptop users, banking, financial securities or for use with 87 keyboards, 82 keyboards, 68 keyboards, 61 keyboards and other keyboards without a number part.Specification:Item Type: 21 Key Numeric KeypadMaterial: ABSScope of Application: ComputerNumber of Keys: 21Backlight: RGBErgonomics: Support.Package List:1 x21 Key Numeric Keypad1 x Power Cable1 x Key PullerNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.