Apple PowerBook (200 Series) - Manual (Page 43)

35 Connecting Additional Equipment
Where to add cable terminators when connecting two or more SCSI devices:
Using your PowerBook as a SCSI disk
If you have a PowerBook Duo MiniDock, you can purchase a cable called
the Apple HDI-30 SCSI Disk Adapter, which lets you connect your
PowerBook to another computer as a hard disk. The PowerBook appears on
the desktop of the other computer as a hard disk icon, and you can transfer
information between the computers by dragging files. This feature is called
SCSI disk mode.
The Apple HDI-30 SCSI Disk Adapter is dark gray (the same color as your
PowerBook computer), is about 10 inches long, and has 30 pins.
The PowerBook Duo Dock and Duo Dock II do not support SCSI disk mode.
WARNING Follow the steps for connecting and disconnecting SCSI
devices carefully to avoid loss of information and damage to your
equipment.
SCSI peripheral interface cables HDI-30 SCSI
system cable
Terminator
(If this SCSI device has an internal terminator, omit this external terminator.)