Connector hole in the back of (some?) Unix PCs? (for HD2?)

[Neil Cherry]

>How is everybody else thinking of the external aspects of the HD2 upgrade?
>I have recently read in a local group that the cheap alternative (putting
>the external disk(s) in an AT box with an AT power supply) might not work
>very well.  The person who tried this approach said that cooling was poor
>and the PS was not loaded enough to work properly with one drive.

I'm going to put the whole thing into a PC/XT case. What I need to know if
the 2nd drive board is still available and is it the one that allows me to
use up to 4 drives. Also how do I get either  version and cost. Not too much
to ask.
NJC