IBM IntelliStation Z Pro Type 6866 User Manual page 89

– An Ultra160 ribbon cable connects the internal Ultra160 SCSI hard
disk drive to the SCSI connector on the system board. This cable
has five additional connectors for attaching more internal SCSI
devices.
– A round SCSI cable connects external SCSI devices to the SCSI
connector on the system board and provides an additional
connector for a SCSI device installed in bay 1. If a SCSI device is
installed in bay 2 but no external SCSI devices are attached, a SCSI
terminator must be attached to the external SCSI connector. For
more information on connecting SCSI devices, see the Adaptec
SCSI documentation on the Software Selections CD that comes with
your computer.
Note: To locate connectors on the system board, see "Identifying parts on
the system board" on page 60.
The following are some important points to remember when connecting IDE
internal drives:
When you install a drive, ensure that the drive connector at the end of
the signal cable is always connected to a drive; also, ensure that the
drive connector at the other end is connected to the system board. This
reduces electronic noise from the computer.
If two IDE devices are used on a single cable, one must be designated
as the master device and the other as the slave device; otherwise, the
system might not recognize some of the IDE devices. Switch or jumper
settings on each IDE device determines the master or slave designation.
If two IDE devices are on a single cable and only one is a hard disk
drive, the hard disk drive must be set as the master device.
If you have only one IDE device on a cable, it must be set as master.
For help in selecting drives and cables, see page 56.
Chapter 5. Installing options
73