Ujjdwiurgh 21 Keys White Backlit Mechanical Numeric Keypad Numpad with Cherry Blue Switches for Notebook Desktop PC

2.A stand-alone chip device that is designed for easy control and its noninterference with the main keyboard 1. cherry 21-key mechanical numeric keypad with brown switches, they're pretty quiet compared to the other mechanical keys, suitable for both office use and gaming 3.Hot keys available - Pressing FN ESC to turn on computing device, FN TAB to turn on "("; FN Backspace to turn on ")"; FN NUM to turn on "="; FN / to turn on €; FN x to turn on euro and FN - to turn on"¥" Type: numeric keypad 4.Applications - Good for laptop users. Suitable for banking, financial securities and business workers. Can used with 87 keyboards, 82 keyboards, 68 keyboards, 61 keyboards and other keyboards without numeric section