I have a 52x24x52 or something similar in specs, Sony CD-RW drive that perfectly fits in A4000D. It is just the right colour, and it is also 1/3 shorter in length than standard size so it leaves more than enough room in the back for the power and IDE connectors.
To my misfortune, I bought it at about the same time when I upgraded to Mirage 4000 Pro tower, so I didn't get a chance to appreciate it in A4000D for too long. :-)
