Bluetooth USB Dongle 5.0 Adapter fo Desktop/Laptop Windows 10 compatible

Comapatible on WIndows XP, 7, 8 and 10

A dongle is a small piece of computer hardware that connects to another device to provide it with additional functionality, or enable a pass-through to such a device that adds functionality.

In computing, the term was initially synonymous with—a form of hardware where a piece will only operate if a specified dongle—which typically contains some other cryptographic protection mechanism—is plugged into the computer while it is running.