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  #1  
February 7th, 2016, 09:04 AM
Unregistered
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MBA USB port not working

Hello sir my MBA USB port is not working so please provide me information about the how to resolve the problem.
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  #2  
February 7th, 2016, 09:52 AM
Super Moderator
 
Join Date: Mar 2012
Re: MBA USB port not working

When USB port is not working, there may be several reasons (or no reason) for USB ports ceasing to function with no cause.

How to resolve MBA USB port problem

SMC RESET

For those with a MacBook, MacBook Pro, and MacBook Air, all you need to do is this:

Shut down the Mac and connect the power cable

Hold down Shift+Control+Option+Power concurrently for a few seconds, when the light on the power adapter blinks or changes colors you’ll know SMC reset is complete

Release all keys at the same time

Boot the MacBook Pro / Air by hitting the power button as is typical

The USB ports on the MacBook should now work just fine, which you can confirm by connecting the USB device as usual and checking to be sure that it works –

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.

Other Considerations for USB Not Working on a Mac

If a single USB port has failed but other USB ports are continuing to work on the Mac,

If some USB devices work on the Mac, but another USB device does not work

If there are firmware and OS X software updates available, install them onto the Mac.


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