OK, I'll pay the extra US$30 to get the floppy module. My PowerBook 1400cs/166 has the CD module already in it.

I'll also get a HDI-30 to 25-pin SCSI adaptor so I can

• Use SCSI Disk Mode with my Mac SE FDHD (dual floppy) and Macintosh IIci (subject of a few posts here)
• Use my Asanté EN/SC-10T to connect to the Internet
• Use my SCSI hard drive enclosure. It's a wonky one, with no screws, and an exposed power supply that doesn't fit my hard drive (160MB LC III pull), and I run a power cable from a SATA/IDE-to-USB conversion kit that I wasn't using (the power cable used Molex as an intermediate between the mains and SATA-style power).
• Use any miscellaneous SCSI peripherals I get in future.

I'll also get 18 650MB CD-Rs (a pack of 10 and 8 individuals; the seller of the 8 individuals threw in a CD-RW, which is hard for the 1400cs to read) for the CD drive.

I'll order Sunday.