Completely interference-free, wireless connectivity. Rapoo's wireless multimode technology is fully compatible and automatically pairs with devices to make work easier for professional users. Whether you are using devices with Bluetooth 3.0 or older, Bluetooth 4.0 and above, or want to use a 2.4 GHz Wi-Fi dongle: the Ralemo Pre 5 keyboard is compatible with all options. The intelligent switching between Bluetooth 3.0, 5.0, and 2.4 GHz ensures a stable wireless transmission with a range of up to ten meters and 360-degree coverage. This allows you to continue using your desktop setup even when USB ports are limited or the receiver is lost. Switch between connected devices with a click. You can connect all your devices with the Ralemo Pre 5. It automatically pairs with the working device, connects to multiple devices simultaneously, and can easily switch between them with a click. It has never been easier.