Bluetooth technology is a wireless communications system intended to replace the cables connecting many different types of devices, from mobile phones, keyboards and mice. But what if your laptop or desktop computer doesn't have Bluetooth? The Kensington Bluetooth 4.0 USB Adapter is the answer - and a very small one at that! Simply plug the Bluetooth 4.0 USB Adapter into your computer's USB port and you're ready to connect wirelessly with a Bluetooth keyboard, mouse, printer, PDA, cell phone, headset, presentation device and much more. The Bluetooth 4.0 USB Adapter is so small you can leave it in your laptop's USB port without interfering with its portability. Your laptop will still slip easily into a sleeve or computer bag thanks to a size up to six times smaller than typical Bluetooth adapters. With the Bluetooth 4.0 USB Adapter you'll connect easily and wirelessly, whether you're connecting a Bluetooth enabled headset for a Skype video chat, or controlling your PowerPoint presentation wirelessly with a Bluetooth enabled presenter.