External USB Drive Power

For external drives that need 2 USB ports to run, can I plug one port into the computer for the data connection and one into one of the AC to USB wall warts for additional power?
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  1. I believe so.
    I see no danger in testing this.

    I'm not certain how it is configured though. One of the USB connections may be for DATA + POWER whereas the 2nd one may be POWER ONLY. If it doesn't work, try switching them.
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