ext usb drives, powered by port?

Discussion in 'Amateur Video Production' started by Robert Morein, Oct 13, 2003.

  1. There are cases available without power supplies, which use the USB
    connection to power 2.5" drives.

    Does this endanger the port? Is there a fuse that requires depot
    Robert Morein, Oct 13, 2003
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  2. Robert Morein

    WEBPA Guest

    There are cases available without power supplies, which use the USB
    I have a pair of USB (2.0) only enclosures that hold 2.5" (9.5mm thick)
    notebook HDDs. I've had 3 different drives in them. 5 gb IBMs, 20 gb
    Toshibas, and (now) 60 gb Fujitsus. They get routinely used with 3 different
    notebooks and 3 desktops. One of the desk tops. With one exception, all work
    perfectly. The exception is that the 20 gb Toshibas drew more current during
    spin-up that any of the other drives. One of the notebooks (Dell L400) would
    not provide enough current...had to spin the drive up with a battery pack (or
    wall wart) before connecting USB. My current 60 gb drives do not require this
    on any computer...and they also work fine through a 4-port hub provided there
    are no other port-powered devices (like optical mouse) on the hub.

    On the one machine that could not spin up the Toshiba drives, there were no
    consequences for trying....the drives simply never came on-line.
    WEBPA, Oct 14, 2003
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