MBA 11" not charging iPhone 4?

Discussion in 'MacBook Air' started by iag48, Jan 18, 2011.

  1. iag48 macrumors regular

    Jan 26, 2008
    I just noticed something tonight, my MBA 11 won't charge my iPhone 4 from the right side USB. I kept getting a message saying that the USB device is drawing too much power and therefore the usb device will be disconnected. I then plugged it in to the USB on the left and it worked as expected.
    I never noticed this since I always charge it from the left USB. Can anyone else with an 11" MBA, test the charging ability of right side USB?

    Also, the fans would kick up very high when I plugged in the iPhone to the right side USB.:confused:
  2. iag48 thread starter macrumors regular

    Jan 26, 2008
  3. 2IS macrumors 68030

    Jan 9, 2011
    I read a similar thread a while back. Not sure if it was the 11 or 13 but same basic story.
  4. neopickaze macrumors newbie

    Jan 18, 2011
    Me too, apparently the amps delivered through one of the sides is reduced, so only one is suitable for charging.
  5. iag48 thread starter macrumors regular

    Jan 26, 2008
    Just got off the phone with the apple store and the genius said both USB ports should provide power to the phone.
    Making an appointment for tomorrow.
  6. baller1308 macrumors 65816

    Dec 8, 2009
    Does this issue persist when using usb powered external harddrives? I know way back on the PowerBook's that the usb didn't provide sufficient power to usb powered external harddrives.
  7. 2IS macrumors 68030

    Jan 9, 2011
    I just tried charging my iPhone 4 with my MBA 13 and it worked on both sides.
  8. 1rottenapple macrumors 68020

    Apr 21, 2004
    I've always charged my i4 on either side of the mba 11 in. Never had an issue. try restarting both computers :confused: after that, well i'm out of ideas.
  9. BeyondtheTech macrumors 68020


    Jun 20, 2007
    No issues on either side of my base 11.6", even with hubs plugged in on both sides.

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