Hi all, just lost the only USB port on the mac air. It only gives power but stopped identifying any devices. Is this the end of the machine? (2009 Model, way out of warranty). Is this an easy repair job or the whole motherboard has to be replaced? Or does someone know a bluetooth to USB port adapter so I can at least use rudimentary devices such as mouse, digital camera connection, etc...? can I connect a bluetooth mouse without its USB dongle but with the built in Mac bluetooth? thanks