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1 usb not working

im running the following configuration
Model Name:          MacBook Pro
  Model Identifier:          MacBookPro8,1
  Processor Name:          Intel Core i7
  Processor Speed:          2.8 GHz
  Number of Processors:          1
  Total Number of Cores:          2
  L2 Cache (per Core):          256 KB
  L3 Cache:          4 MB
  Memory:          4 GB
  Boot ROM Version:          MBP81.0047.B27
  SMC Version (system):          1.68f99
  System Version:          Mac OS X 10.7.5 (11G63)
  Kernel Version:          Darwin 11.4.2
  Boot Volume:          Macintosh HD
  Boot Mode:          Normal
just noticed the usb next to the card reader has stopped working
ive run the apple hardware test - normal and extended and everything is OK
Ive tried a smc restart but not sure if that was successful
im challenged with 1 working usb i need to carry around a multi port
any suggestions
Hardware problems can only be resolved in an Apple store genius bar or a repair facility.  Take it in for a diagnosis.
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