This 2.4G wireless numeric keypad uses advanced 2.4GHz wireless technology and can be used after connection. No device driver is required. With the USB receiver, the signal transmission is stable with almost no delay or interruption. The maximum operating range of the USB keypad is 10m. The classic 18-key numeric keypad uses a retro chocolate round key. The concave design of the pad allows perfect contact between the finger and the cap. It is ergonomically designed to give you a comfortable typing experience and improve work efficiency more effectively. [Wide Compatibility] the operation of iMac, MacBook, Laptop, Notebook, Desktop or PC. Compatible with Windows XP / 7/8/10 iOS. (The 18-key wireless numeric keypad is not fully compatible with Mac OS because Apple does not support external keys or buttons.)