I'm using Toshiba modules. The board is wired for them and not Sharp's which are slightly different and seem to be harder to get. Sharp's modules are no smaller than Toshiba's anyway. But listen to this. I screwed down the drive sled and the TOSlink module drops right in to the space behind the hard drive, at least for Fujitsu drives. Does anyone know if all brands of drives hav the same dimensions?

I guess it didn't fit before because I checked with a circuit board mount version (TOTX173) rather than panel mount (TOTX176) which is quite a bit shallower. So all you people that wanted optical and the second hard drive can come to my site and put yourself down for one!

Stu