I have this 2011 MBP: http://www.everymac.com/systems/app...2011-unibody-thunderbolt-specs.html#macspecs2 The two USB ports have failed. Seems to be a board problem with the USB controller. Was quoted $350 to repair. I don't want to spend that much for a spare machine. It would be nice, however, to be able to connect a mouse, thumb drive, etc. This model does have a Firewire 800 port. Is there such a thing as a Firewire male to USB-A female adapter? or are the two protocols too different electronically to produce something functional and cheap?