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To connect a SCSI device to the SCSI port on your PowerBook,
you need an Apple HDI-30 SCSI System Cable.
Setting up one or more SCSI devices for use with your PowerBook
involves the steps listed here.
m installing software
m setting SCSI ID numbers
m checking that the SCSI chain is properly terminated
m connecting cables
These steps are described in the following sections.
Installing software
Most SCSI devices come with software that allows your computer
to communicate with them. These programs are called drivers
. (If
no drivers come with a device, then it doesn’t need any.) To install
a driver, follow the instructions that came with the device.
Setting SCSI ID numbers
Each device in a SCSI chain must have a unique ID number
between 1 and 6 so the computer can identify it properly. The
information in this section can help you assign SCSI ID numbers
to the devices you want to use with your computer.
s Warning: Using two or more devices with the same SCSI ID
number can cause your equipment to malfunction. You could
lose information as a result.
s
Your computer has the SCSI ID number 7, and its internal hard
disk has the number 0.
See the documentation that came with your SCSI devices for
information about ID numbers and how to change them.
224 Chapter 13: Expanding Your Computer System