Plug and Play: NO complicated pairing neccessary.NO drivers or pairing procedure is required.NO delays and dropouts, simply insert the provided 2.4GHz USB receiver adapter from the back of the Numpad and slide the ON/OFF switch to any computer/laptop. When switching ON the Numeric Keypad, the Tab key LED indicator will automatically be ON allowing all numerical keys to start working immediately. Note: The Receiver is inserted in the battery compartment of the keyboard. Fast Response,Portable: The numeric keyboard adopts the latest high-strength scissor foot switch design, which can withstand more than 2 million strokes, fast response precise control good resilience and reduce the press sound.Our Number Pad is only 87g, portable design make it easy to store in bag for business traveling.Tips: Power Supply by 2 x AAA Battery ( NOT included ). Ergonomic Design: Ergonomic 15 tilt design, fit your hands easily to prevent fatigue. 4 Anti-slip pads on the back provide optimum comfort and securely keep the wireless number pad in place. NumLock button deploys by activating the cursor and screen control key functions, After pushing the NumLock button, the Tab key LED will turn OFF to indicate the additional shortcut keys functions are activated. All numeric keys will no longer be operational. The Tab key LED must be ON at all times for the numeric keys to work its original function. Auto Sleep Function: The Wireless numeric keyboard will automatically enter sleep mode after 10 minutes of inactivity to save power and energy. Press any key can wake up the keypad within 5 seconds. Fast data transmission, the maximum working range up to 32.8 ft.(TipThe hibernation of the computer will cause the keyboard to enter the hibernation mode, after starting the computer and waiting for 5 seconds, the product can be used normally). Wide Compatibility: The wireless number pad works with laptop, notebook, desktop, PC computer etc. Compatible with Windows 2000 / XP / Vista / 7 / 8 /10/11 operating systems. Tips: Home and End buttons: you need to "turn off" "Use text cursor to navigate pages" in your browser settings for it to work. 1534Perfect after-sales service: If you have any quality issues or do not like it after receiving it, please contact us and we provide free return and exchange services