How can one get the special cabling as talked about below? I think I mainly need the SCSI terminator... I have the typical SCSI cables and the laptop adaptor.
The SCSI Port and Cabling
The SCSI port used in PowerBook computers is called an HDI-30. It is a square connector with 30 pins. There are two different SCSI cables. In addition to one of these cables, you may need a terminator, model number M3503xx/A (in the US all model numbers are LL, thus the terminator would be M3503LL/A). Refer to article 24281: "PowerBook: SCSI Cables Used" for images of the various cables.
Apple HDI-30 SCSI Disk Adapter
This adapter, model number M2539xx/A is specifically for SCSI Disk Mode, also known as HD Target Mode. It can be distinguished by its HDI-30 connector having 30 pins (5 rows of 6). The connector on the other end is a standard Centronics 50 connector.
Apple HDI-30 SCSI System Cable
This cable is for connecting external SCSI devices, like CD-ROMs and hard drives, to your PowerBook and it is called the Apple HDI-30 SCSI System Cable, model M2538xx/A. Its HDI-30 connector only has 29 pins. The connector on the other end is a standard Centronics connector.