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  1. J

    USB ports dont recognize, power lights work. (820-2936B) Macbook Pro 13 Mid-2011

    When Flash Drives or external USB drives are plugged in they show power and the respective LED's say they are working, but the OS never recognizes that anything has been plugged in. Checked continuity on L4605.L4600,L4615,L4610 while in circuit. Since the power is working, my assumption is that...
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