The reason is that you only want to have an adapter per device. However, if the adapter happens to be integrated onto the wireless card or motherboard, even when it does not work, Windows 10 can still see it, making the new adapter install a challenge. Usually, when you have to replace a broken Bluetooth adapter, you can just remove it and install the new replacement. It's typically used as a medium to transfer low-rate data between devices, such as phones, laptops, and desktops. Bluetooth is a ubiquitous short-range wireless technology that allows compatible peripherals (for example, mice, keyboards, headphones, and speakers) to communicate with a computer without the need for cables.