Sorry, the Tecra M4 may come with a bluetooth antenna, and drivers
preinstalled, and show a bluetooth device in device manager, but it
does not have bluetooth built in. you have to have their usb bluetooth
device PA3455U-1BTM to use bluetooth (or some type of bluetooth adapter
to plug into the tabletpc). So saying you'll loose bluetooth
functionality was wrong, it was never there to begin with. the best
part about the PA3455U-1BTM is that it is the first adapter I know of
in existance to use the Bluetooth v.2.0 specification as all the others
are v.1.2 or less.