Before I go hacking the ends off my iRiver car adapter to power my USB DVD and maybe a portable USB HD, what do you guys think?

This is the unit here https://secure3.nexternal.com/shared...RowID=116&All=

The label on the side says
Input : 12/24v ... 1.3A
Output : +5v ... 2.0A
Output Power : 10W max

Chris