IBM PC 300PL Types 6862, User Manual

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and the third attaches to the secondary IDE connector on the
system board.
- If the cable has two connectors, one of these connectors is
attached to the hard disk drive, and the other attaches to the
primary IDE connector on the system board.
Note: If you want to add another device, and your computer
does not come with a CD-ROM drive preinstalled, you
will need a second signal cable with three connectors.
You will need an 80-conductor ATA 66 signal cable if
you are replacing the existing signal cable or adding a
second hard disk. ATA 66 signal cables are
color-coded. The blue connector attaches to the system
board; the black connector attaches to the primary
device (also known as the master device), and the gray
middle connector attaches to the secondary device (also
known as the subordinate device).
If your computer comes with a CD-ROM drive, it will
have an ATA 66 signal cable. However, if you are
installing a hard disk drive, you must change the
switch setting on the CD-ROM drive to secondary and
change the connector used for the CD-ROM drive to
the gray middle connector.
– The narrower signal cable has two connectors for attaching the
diskette drive to the diskette-drive connector on the system board.
Note: To locate connectors on the system board, see “Identifying parts on
the system board” on page 74.
The following are some important points to remember when connecting
power and signal cables to internal drives:
Ÿ
The drives that are preinstalled in your computer come with power and
signal cables attached. If you replace any drives, it is important to
remember which cable is attached to which drive.
Ÿ
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.
Ÿ
If two IDE devices are used on a single cable, one must be designated
as the primary or master device and the other as the secondary or
subordinate device; otherwise, some of the IDE devices might not be
recognized by the system. The primary or secondary designation is
determined by switch or jumper settings on each IDE device.
Ÿ
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.
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PC 300PL and PC 300GL User Guide