RGB Backlight And Blue SwitchSupport 9 Backlight Modes. By Pressing The Fn Key And Numpad 5 At The Same Time, You Can Change The Backlight, Professional Mechanical Black Switches, With A Tactile And Crisp Click, Provide Fast And Accurate Button Function. 21 Keys Mechanical Numeric KeypadMagicfore Qisan 21 Keys Enhanced Mechanical Numberic Keypad Has 17 Numeric Keys And 4 Additional Keys,Including "Tab""Esc"""And "Fn". By Simultaneously Pressing The Fn Key And Another Key, You Can Input Parentheses, An Equal Sign, Currency Symbols, Or Activate The Calculator. Ergonomic Design The Stepped Keycap, Fit Your Hands Easily To Prevent Fatigue. Spring Type Ergonomic Design, Care For Your Wrist. Works With Pc And Desktop Computers That Have Windows 2000 / Xp / Vista / 7 / 8 / 10, Android/Linux Mini Financial Keyboard EnhancementsCompared To Other Ordinary Version Keypad, It Supports Numlock, Esc, Tab, Delete Etc. With Shortcut Key Which Can