Fangrui Product Details Plug-and-play Convenience: This Wireless Numeric Pad Requires No Drivers, Just A Single Battery And A Usb Port. Ergonomic Design For Comfort: The Numeric Keypad Features Soft-touch Keys That Provide A Comfortable Typing Angle, Reducing Wrist Pressure. With Minimal Noise, Its For Quiet Environments And Extensive Numerical Input. Precision And Stability: Each Key Is Clearly Marked And Raised For Precise Input. A Stable Rubber Base Ensures The Keypad Stays Firmly In Place During Use, Enhancing Your Efficiency And Preventing Slippage. Broad Compatibility: Compatible With A Wide Range Of Operating Systems,this Usb Wireless Numeric Keypad Seamlessly Integrates With Both Laptops And Desktops. Portable And Lightweight: This Sleek Numeric Keypad Is Your Travel Companion For Business Trips Or Daily Use, Ensuring Productivity On The Go. Hign-concerned Chemical:none Switches Hot Swap:no Backlight Type:no Backlight Interface Type:usb Type:2.4ghz Wireless The Product Appearance And Printed Words May V