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Power and signal cables for internal drives
Your computer uses cables to connect IDE, Serial ATA, and SCSI devices to the
power supply and to the system board. (See “System board internal connectors” on
page 72 for the location of system-board connectors.) Review the following
information before connecting power and signal cables to internal drives:
v The drives that are preinstalled in your computer come with power and signal
cables attached. If you replace any drives, remember which cable is attached to
which drive, or label the cables.
v When you install a drive, make sure that one of the signal-cable connectors is
connected to the drive and that the connector at the other end of the signal cable
is connected to the system board.
v The computer has one IDE bus, which is primary.
v If you have only one IDE device on a cable, it must be set as a master device.
The following cables are provided:
v Power cables: Four-wire power cables connect the drives to the power supply.
At the end of these cables are plastic connectors that attach to different drives;
these connectors vary in size. With Serial ATA drives, you can use either a
four-wire power cable or a five-wire Serial ATA power cable, but do not use both
at the same time (use one or the other).
v Signal cables: Signal cables typically are flat cables, also called ribbon cables,
that connect IDE, Serial ATA, SCSI, and diskette drives to the system board. Two
or three types of signal cables come with your computer:
– IDE: The wider IDE signal cable has three connectors. One of these
connectors is attached to the drive, one is a spare, and the third is attached to
the primary or secondary IDE connector on the system board. The spare
connector can be used to connect additional IDE drives to your computer.
Note: The optical drive is attached to an ATA 100 signal cable. ATA 100
signal cables are color-coded. The blue connector is connected to the
system board. The black connector is connected to the master IDE
device. The gray middle connector is connected to the subordinate IDE
device.
– Serial ATA: The narrower, black signal cable has two connectors. One is
connected to the SATA drive, and the other is connected to the connector on
the system board. Each SATA drive comes with a cable. If you install an
additional SATA drive, you will need an additional cable.
– SCSI: The following cables can be used to attach SCSI devices to the
integrated SCSI controller on the system board:
- An Ultra320 twisted ribbon cable connects the internal Ultra320 SCSI hard
disk drive to the SCSI connector on the system board. This cable has four
additional connectors for attaching more internal SCSI devices.
- A round SCSI cable connects external SCSI devices to the integrated SCSI
controller on the system board. For more information about connecting
SCSI devices, see the SCSI documentation.
40 IntelliStation Z Pro Types 6223 and 6227: Hardware Maintenance Manual and Troubleshooting Guide