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 Keypad Material: ABS Scope of Application: Computer Number of Keys: 21 Backlight: RGB Ergonomics: Support. Package List: 1 x 21 Key Numeric Keypad1 x Power Cable1 x Key Puller Note: 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.