This ergonomic vertical mouse supports Bluetooth (5.0/3.0) and 2.4GHz USB-A wireless modes, allowing seamless switching between up to three devices, with Bluetooth connecting two devices simultaneously to save USB ports—ideal for laptops without USB-A ports. The built-in USB receiver (stored at the bottom) enables quick 2.4GHz connection with no software required, and mode switching is done easily with a single button.