IBM IntelliStation M Pro User Manual page 75

v If two IDE devices are used on a single cable, one must be designated as the
primary device and the other as the secondary device; otherwise, the computer
might not recognize some of the IDE devices. The primary and secondary
designation is determined by switch or jumper settings on each IDE 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 can be attached to
different drives; these connectors vary in size. You can use either a four-wire
power cable or serial ATA power cable with serial ATA drives, but do not use both
at the same time (use one or the other).
v Signal cables: Signal cables are typically flat cables, also called ribbon cables,
that connect parallel IDE, SATA, SCSI, SAS and diskette drives to the system
board. Two or three types of signal cable come with the 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 IDE connector on the system board.
The optical drive is attached to an ATA 100 signal cable. ATA 100 signal
cables are color-coded. The blue connector is attached to the system board.
The black connector is attached to the primary IDE device. The gray middle
connector is attached to the secondary IDE device.
– Diskette drive (optional): The narrower signal cable has two connectors.
One is attached to the diskette drive, and the other is attached to the diskette
drive connector on the system board.
– Serial ATA: The narrower, black signal cable has two connectors. One is
attached to the SATA drive, and the other is attached 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. SATA signal cables should be
connected to the system board connectors (SATA 0 through SATA 2) in
numerical order, starting with SATA 0.
If you install the fourth SATA drive, you will need to install the optional
ServeRAID-7t S-ATA controller. All SATA drives must then be connected to the
ServeRAID-7t S-ATA controller, instead of the system board. The optional
ServeRAID-7t S-ATA controller comes with two additional cables. See the
optional ServeRAID-7t S-ATA controller documentation for cabling instructions.
The system board cannot support the fourth SATA drive.
– SCSI: The Ultra320 twisted ribbon cable connects the internal Ultra320 SCSI
hard disk drive to the mini-PCI SCSI connector. This cable has three
additional connectors for attaching more internal SCSI devices.
– SAS: The SAS flat three-drop cable connects the internal SAS hard disk drive
to the SAS mini-PCI connector. This cable has three connectors for attaching
three internal SAS devices.
Chapter 4. Installing options
61