Mechanical USB Wired Numeric Keypad with RGB LED Backlit 21 Key Numpad Mechanical Numeric Keyboard for Laptop Desktop Features: 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 Open The Computer Calculator Directly. The Numlock Function Is Independent Of Any Other Keyboard That Are Currently Connected. Mini Teclado NumRicoPlug And Play, Usb Connection, No Device Drivers, Is An Ideal Choice For Spreadsheet Accounting And Financial Applications. No Battery Required, Don'T Have To Worry About Your Number Pad For Laptop Will Be No Power. 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. Laptop'S Complement/Short Keyboard You Can Move The Numpad At A More Comfortable Position Freely, Easier To Enter Numbers Than The Keyboard On The Laptop. Improve Efficiency And Productivity For You While Working From Home. This Device Is Also Slim And Lightweight, Easier For You To Carry Anywhere With Your Laptop, Especially Perfect For Some Small Laptops/Short Keyboard Don'T Have A 10-Key Pad. Keyboard Extensions: Most People Often Come Across Works That Require Entering Numbers Into Excel And Databases. The Jphtek Numeric Keypad Can Be Used On A Laptop Or Desktop As A Side External Numeric Keypad For 87 Keyboards, 82 Keyboards, 68 Keyboards, 61 Keyboards And Other Keyboards That Do Not Have A Number Section. Blue Switch And Data Entry Assistant Blue Switches Have A Crisp Sound And A Strong Sense Of Passage, Providing Precise Tactile Feedback For Input. But The Blue Switches Are A Bit Noisy, And If You Want A Quiet Number Pad, Maybe It'S Not The Best Option For You. The Switch Is Not A Hot-Swap Switch, So The Original Blue Switch Cannot Be Replaced, Only The Keycap Can Be Replaced. This Plug-And-Play Numeric Keypad Works Without Any Setup And Requires No Drivers. Illuminated Keys Allow You To Work In Dimly Lit Environments, Even Late At Night. PBT Material Keycaps With Anti-Grease Coating Provide Extra Durability. 10. Backlight Modes: Full-Lighting, Breathing, Lights-Off Toggled By Press "Fn + 5","Fn + Esc"=Calculator. Works With Windows 2000/ Xp/ Vista/ 7/ 8/ 10/ 11 With Macbook & Chromebook Operating Systems. 5.2ft Usb 2.0 Cable, Long Enough To Connect Your Devices. _x000D_