On Tue, 28 Jul 2009 20:33:41 -0400, "Stormin Mormon"
wrote:

And what if one of the computers was turned off? Would the
USB cable provide enough power to spin the other drive, and
allow the data transfer?

Not in my neighborhood.

Make the data hard drive a slave and just copy the data unto the
master drive. Or, burn on a DVD.

Then remove the slave drive.