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Connecting external SCSI devices
Your computer has a port for connecting devices that use the Small Computer
System Interface (SCSI, pronounced “skuh-zee”). SCSI devices commonly
used with the Macintosh include hard disk drives, CD-ROM drives, scanners,
some printers, and tape or cartridge backup drives.
The SCSI port permits high-speed communication between the computer and
the device. The SCSI icon appears below the port on the computer’s back
panel.
You can connect SCSI devices to the SCSI port in a chain. The first device in
the chain plugs into the SCSI port; the second device plugs into the first
device, and so on.
You can attach up to six external SCSI devices to the SCSI port. All SCSI
devices connected to this chain must have their own unique ID number (no
two devices can use the same ID number). If your computer came with the
optional CD-ROM drive installed, this drive is also part of the SCSI chain
and uses SCSI ID number 3.
IMPORTANT
“Before You Connect a Device” and “Connecting a SCSI Device,”
both later in this section, contain general instructions for attaching SCSI
devices to your computer. Be sure also to follow the specific instructions that
came with your external hard disk drive or other SCSI device when
connecting the device to your Macintosh.
SCSI port
SCSI icon
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Chapter 3