Model: K24(white) Switch brand: GATERON, Material: ABS Interface: USB 2.0 Connection mode:wired Key Number: 21 Keyboard Lifespan ( times): 80 million Response Speed: 0.1ms USB refresh rate:1MS/1KHZ USB Anti-ghosting Number: All-key Macro custom programming:Support Hot SwapSupport The FN key combination supports the following functions FN+arrow key, adjust 14 kinds of super dazzling lighting effects on the front FN+ESC to restore factory settings FN+* key, can switch random seven colors or 7 kinds of monochrome (note that some modes are not supported) Model: K24(Black) Switch brand: OUTEMU Material: ABS Interface: USB 2.0 Connection mode:wired Key Number: 21 Macro custom programming:Support Hot SwapNot Support Backlight: 13 RGB lighting effects System support: WIN2000/WINXP/VISTA/WIN7/WIN8/WIN10 FN+7 factory default is to white light "2 4 6 8" Package Lists: 1 x Mechanical keypad 1 x Manual Independent numeric keypad The number locking function is independent of any other keyboard that are currently connected.Advanced mechanical switch is superior to water resistant, 80 million clicking life. Compare with the other standard keypad, 21 keys mechanical numeric keypad is suitable for laptop users, banking, financial securities, busine workers or the person who uses with 87 / 82 / 68 / 61 keyboards or other keyboards without numeric section. Small and light. Compatible with 5-pin and 3-pin replaceable ,with 98% of the redgular mechanical switches. The FN key combination supports the following functions: FN+arrow key, adjust 14 kinds of super dazzling lighting effects on the front FN+* key, can switch random seven colors or 7 kinds of monochrome (note that some modes are not supported) FN+"8/2" key, five-level speed adjustment FN + "+/-" key, five-level brightne adjustment FN+ESC to restore factory setting FN+DEL front light off/on backlight function FN+NUM=Calculator Full key support macro definition programming The drive interface can be set or restored to factory settings according to personal needs. FN+*: Random colorful and 9 monochrome can be switched FN+8 2 :Five-stage speed adjustment FN+7: factory default is to white light "2 4 6 8" In any mode, pre FN+1 to record custom light color, at this time the blue indicator LED flashes, you can pre the button arbitrarily, 10 colors cycle to switch until your favorite color, and finally pre FN+1 to save, indicating that the LED stops flashing, and the recording is succeful.