Where can I find USB dongles for Windows that uses WidComm?
Here is the answer from WidComm / BroadCom
The manufactures that are shipping the latest releases of the BTW stack software are Targus, Anycom, Kensington, and Belkin. When purchasing please verify with them that the BTW release is at least 4.x or newer.
TDK go blue, and MSI Start key also uses the WidComm stack.