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Details about the Mac:

  • MacBook Pro 13"
  • Processor 2.5 GHZ
  • Memory 8GB 1600 MHZ

Since I upgraded my Mac version to Mac OS X 10.10 (Yosemite), the Mac doesn’t recognize any USB devices. Neither disc on key, or my iPhone USB charger. The USB charger is not Apple original equipment but it all worked fine before.

How can I fix it?

Screen shot of disc utility: enter image description here

Improve this question
6
  • Open disk utility and check if you can see USB there
    – Rohan Pawar
    Commented Oct 16, 2015 at 7:31
  • I see 2 other things: Macintosh HD and descryptedFile.dmg
    – Dejel
    Commented Oct 16, 2015 at 7:33
  • is your USB connected to Mac, If not connect USB device and post screen shot
    – Rohan Pawar
    Commented Oct 16, 2015 at 7:34
  • yes. Just sent a screen shot
    – Dejel
    Commented Oct 16, 2015 at 7:41
  • Check this link support.apple.com/kb/PH19094?locale=en_US
    – Rohan Pawar
    Commented Oct 16, 2015 at 8:29

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