Cirago BTA-3210 EDR BT v2.0 Micro USB Adapter
Product Information
USB bluetooth dongle that is small enough to keep plugged in without it getting in the way. It only has a 10m (30 feet) range, so don't get it if you need it to work at a distance. However, for connecting a cell phone or some other simple use, it works perfectly.
http://www.cirago.com/docs/html/Cirago_BTA3210.html
Compatibility
Works with Ubuntu 7.04 without any problems.