Media Bay second drive in Fujitsu P7230
The donor components:

Top: ThinkPad Ultrabay unit (used for casing) Middle: Fujitsu optical (used for mediabay shell and connector Bottom: ThinkPad conventional bay (used for ATAPI-to-44pin IDE board)

Guts:

Useful guts:

Bridge board (top) with drive select led and resistor soldered in

Assembled, without drive or skins:

Assembled, with bottom cover, ZIF adapter and drive:

Ready to go. I formed the full cover from sheet aluminum:

Fuzzy detailed view of same:

Installed in the P7230:

BIOS screen:

BIOS drive detail (IDE connected to SATA port!):