Connecting External SCSI Devices
Your computer has a port for connecting devices that use the Small
Computer System Interface (SCSI). SCSI devices commonly used with
the SuperMac C600x include hard disk drives, CD-ROM drives, scan-
ners, tape or cartridge backups, and some printers. 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). The
CD-ROM drive on your computer uses SCSI ID number 3. The computer
itself (the main logic board inside it) uses SCSI ID number 7.
IMPORTANT:
The following sections contain general instructions for
attaching SCSI devices to your computer. Make sure you follow the specific
instructions that came with the SCSI device you are connecting to your
SuperMac C600.
Before You Connect a Device
Before you connect a SCSI device to your SuperMac C600
x, complete
these tasks:
■
Make sure each SCSI device connected to your SuperMac C600
x has
its own unique ID number from 0 to 6. The computer itself (the
main logic board inside it) has the ID number 7, and the internal
CD-ROM drive has the ID number 3, making the numbers 0,
1,2,4,5, and 6 available for additional SCSI devices. Make sure
other SCSI devices you add to the chain do not use ID numbers 3 or
7. See the instructions that came with each SCSI device for infor-
mation on checking and setting its SCSI ID number.
IMPORTANT:
If you use two or more devices attached to the same SCSI
interface with the same ID number, your equipment could malfunction and
you could lose data as a result.
■
Make sure you have the appropriate cable for attaching the SCSI
device to your SuperMac C600x.
If the device is the first or only one you are connecting, use a SCSI
system cable to connect it to the computer’s SCSI port.
If the device is not the first one, use a SCSI peripheral interface
cable to connect it to the last device in the chain.
