A USB bluetooth adapter dongle is a popular computer peripheral for those that don't have bluetooth technology built-in to their computers. If you need to interface with other bluetooth devices like a bluetooth headset, keyboard or speakers, then a bluetooth transmitter is what you'll need to make it work. Models like the one featured in the video are cheap and perfect for sending out a bluetooth transmission date to your bluetooth headphones, mouse or earbuds. Many brands out there offer smaller versions like Belkin, Targus and Rocketfish to name a few. The one in the video actually came in a set with a pair of bluetooth stereo headphones with microphone headset functionality. If you need a bluetooth USB dongle, then getting a device with it included may be the way to go to get one for free, for the most part along with the purchase price of the item you buy. A dongle is the easiest way to connect USB to bluetooth to send information to receivers of different kinds embedded in your respective device. Before buying online, check out local classifieds ads for used USB bluetooth adapter dongles for sale as many people will sell their old ones as they buy newer PC and MAc laptops, netbooks and desktop computers with the popular technology built-in.