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On what specific MacBook Pro?
Have you tried different USB cables and devices and ports?
Have you taken a look at System Profiler > Hardware >> Universal Serial Bus?
 
It's a spring 2009 unibody.

Tried many different devices/cables on both ports.

Not sure what you meant by looking at system profiler, here's a picture.

screenshot20110205at249.png
 
It's a spring 2009 unibody.

Tried many different devices/cables on both ports.

Not sure what you meant by looking at system profiler, here's a picture.

screenshot20110205at249.png

if you applecare download the free techtool and it will scan usb and tell you if there is a problem
 
Do a SMC and PRAM reset. If you have never done these before the instructions are below. If they don't help try doing each a second time, on occasion that works. Finally if these resets don't help then restart in SAFE MODE and try.

http://support.apple.com/kb/HT1455


SMC RESET

Shut down the computer.

• Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.

• On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.

• Release all the keys and the power button at the same time.

• Press the power button to turn on the computer. *

PRAM RESET

• Shut down the computer.
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step
• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
• Hold the keys down until the computer restarts and you hear the startup sound for the second time.
• Release the keys.
 
Ok did those things. Unlike the 2nd restart for the PRAM reset I didn't get confirmation that the SMC worked because nothing happened but I did it exactly as written.

No change. iPod realizes it's connected to a source of power but the laptop doesn't know it's there. Same with a digital camera.

Did them twice. Will try safe mode now.
 
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