
Appendix C
Assembling a SCSI Chain
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
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
mset by a hardware switch in each device
mtracked by the system software
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