The Jabra A320s Bluetooth adapter plugs into a USB port and provides Bluetooth capabilities, such as audio, headset, printer, and networking. It was easy to install on my laptop, and works pretty much as advertised, but there are two quirks:
1. When used with an audio headset, the program producing the audio must be started *after* the Bluetooth connection is established. So, for example, if you have iTunes running and want to switch to a wireless Bluetooth headset, you have to make the connection and then exit from, and restart, the iTunes program. This seems like a defect, but it is probably a Windows limitation and not a Jabra problem.
2. I have a Jabra BT320s headset, which supports both stereo and telephone headset functions, and the USB adapter seems to confuse the two functions, and can't switch between them. For awhile, it was insisting on connection to the headset and as a telephone headset instead of a stereo headset, and I finally disabled the telephone headset configuration just to eliminate the hassle.