If you are talking about hard drive enclosures with USB connectivity...old news.
Yes, they work just fine...make sure you get the size which is appropriate for the drives you intend to use (2.5 inch for laptop hard drive, 3.5-inch for desktop hard drive, 5-inch for optical drive).
Example follows: http://www.tigerdirect.com/applications/ca...t=0&Recs=10
You definitely want a model with a power supply of its own, I've not seen any other kind.
Edited by hamluis, 25 November 2007 - 06:28 PM.