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This appendix shows you how to connect a chain of devices to your
Macintosh computer.
IMPORTANT
If the scanner is the only SCSI device you plan to connect to your
computer, do not use the instructions in this appendix. Instead, see Chapter 2,
“Setting Up the Scanner,” where you’ll find the information you need.
About SCSI ID numbers
Your Macintosh has an external SCSI port that accepts a SCSI cable. You use
this port to connect a device, such as the scanner.
Your computer may also have a second, internal SCSI connection. The
computer’s internal hard disk drive is connected to this. If your computer
came with a CD-ROM drive, the drive is also attached to the internal
SCSI interface.
Each device has a unique ID number
To keep everything straight, the Macintosh requires that each SCSI device be
assigned a SCSI ID number. This SCSI ID number is
m set by a hardware switch in each device
m tracked by the system software
Appendix C
Assembling a SCSI Chain