Apple 2300 Series manual Connecting SCSI devices, Apple HDI-30 SCSI System Cable, M2538LL/A, M0207

Connecting SCSI devices

A SCSI device is any product—including hard disk drives, CD-ROM drives, scanners, and printers—that connects with your computer by means of a standard electronic interface, called Small Computer System Interface (SCSI).

You can attach up to six SCSI devices to your computer by linking them together in a chain that starts at your dock’s SCSI port. There is a SCSI port on the PowerBook Duo Dock Plus and the PowerBook Duo MiniDock. (There is no SCSI port on Macintosh PowerBook Duo 2300 series computers.)

To connect a SCSI device to your PowerBook, you need an Apple HDI-30 SCSI System Cable or equivalent. This cable is light gray (the same color as desktop Macintosh computers), is about 19 inches long, and has 29 pins (one “missing pin”).

Refer to the manuals that came with your SCSI devices for instructions on installing any necessary software, setting SCSI ID numbers, and connecting SCSI cables and SCSI terminators. Refer to the illustrations that follow for the proper positioning of SCSI terminators. A chain of SCSI devices must include a terminator attached to the last device in the chain (but nowhere else in the chain). Some devices have internal terminators. Your Macintosh PowerBook does not have an internal terminator.

The names and the part numbers of the cables mentioned in this chapter are the following:

Type of connection	Name of cable	Part number
From a Duo Dock Plus or Duo	Apple HDI-30 SCSI System Cable	M2538LL/A
MiniDock to a SCSI device
From SCSI device to	Apple SCSI Peripheral Interface Cable	M0207
a SCSI device
For SCSI disk mode	Apple HDI-30 SCSI Disk Adapter Cable	M2539LL/A

WARNING When connecting SCSI equipment, always turn off power to all devices in the chain, including your computer. If you don’t, you could lose information and damage your equipment.

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