The Macintosh SE chassis is capable of holding two 3.5-inch storage
devices. The Macintosh SE and Macintosh SE/30 logic boards use the same
amount of space in the Macintosh SE chassis. The Macintosh SE/30 logic
board has only one internal floppy-drive connector. Based on this
information, it is possible to have these combinations of hardware
installed in the Macintosh SE chassis:
1) Macintosh SE logic board; one 800K floppy drive.
2) Macintosh SE logic board; one Apple SuperDrive (formerly Apple FDHD).
3) Macintosh SE logic board; two 800K floppy drives.
4) Macintosh SE logic board; two Apple SuperDrives.
5) Macintosh SE logic board; one 800K floppy drive, one 3.5-inch hard
drive.
6) Macintosh SE logic board; one Apple SuperDrive, one 3.5-inch hard
drive.
7) Macintosh SE/30 logic board; one 800K floppy drive.
8) Macintosh SE/30 logic board; one 800K floppy drive, one 3.5-inch hard
drive.
9) Macintosh SE/30 logic board; one Apple SuperDrive.
10) Macintosh SE/30 logic board; one Apple SuperDrive, one 3.5-inch hard
drive.