Like T3000 posted, a VT4000 will fit in a 3000. I used to have mine in my 3000 Desktop. One thing to look out for (besides the PSU issue) is that the Toaster sits *very* close to the top of a 3000D case. Newtek provided a sheet of nonconducting plastic to apply to the inside of the 3000D's case above where the Toaster sits so that there was no chance of a short.
