Class 2 Bluetooth dongle are the best ones amongst the whole lot of them available in the market. Bluetooth USB V2 EDR allows you to connect your desktop and laptop computer to other Bluetooth peripheral devices and so you can transfer any digital content within a 40 metre range.

This particular dongle is considered as an ideal one for simple, wireless file sharing, photo transfer, Printing, data Exchange and sychronization. The data transfer speed is also quite manageable (of 3 Mbit/s). Version 2.0 also reduces the power consumption by about half
and will make it easier to run multiple applications at the same time.
The best part of this dongle is that it is compatible with Vista.