Lenovo PC 300PL Installing Options in your PC300PL - 6562 - Page 55

Power and Signal Cables

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Power and Signal Cables Your computer uses cables to connect the power supply to the riser card and to integrated drive electronics (IDE) drives. The diskette drive is powered through a cable attached to the riser card. The following cables are provided: Four-wire power cables connect most drives to the power supply. At the ends of these cables are plastic connectors that attach to different drives; these connectors vary in size. Also, certain power cables attach to the riser card. The diskette drive power cable is attached to the riser card. Flat signal cables connect IDE drives to the riser card; signal cables are sometimes called ribbon cables. There are two sizes of signal cables that come with your computer: - The wider signal cable has three connectors. Two of these connectors attach to installed drives and the third attaches to the primary IDE connector on the back side of the riser card. - The narrower signal cable has two connectors. They connect to the diskette drive and the diskette drive connector on the riser card. Note: To locate connectors on the riser card, see "Adapters and the Riser Card" on page 27. The following are some important points to remember when connecting power and signal cables to internal drives: The diskette drive and hard disk drive that are preinstalled in your computer come with power and signal cables attached. Also, if your computer comes with a CD drive, cables are attached. If you replace any drives, it is important to remember which cables are attached to which drives. When a drive is installed, ensure that the drive connector at the end of the signal cable is always connected to the drive; also, ensure that the drive connector at the other end is connected to the riser card. This reduces electronic noise from the computer. If more than one IDE device is used on a single cable, one must be designated as the primary or master device and all others as secondary or subordinate devices; 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. Chapter 4. Working with Adapters and Internal Drives 41

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Power and Signal Cables
Your computer uses cables to connect the power supply to the riser card and to
integrated drive electronics (IDE) drives.
The diskette drive is powered through a
cable attached to the riser card.
The following cables are provided:
±
Four-wire
power cables
connect most drives to the power supply.
At the ends of
these cables are plastic connectors that attach to different drives; these
connectors vary in size.
Also, certain power cables attach to the riser card.
The
diskette drive power cable is attached to the riser card.
±
Flat
signal cables
connect IDE drives to the riser card; signal cables are sometimes
called
ribbon cables
.
There are two sizes of signal cables that come with your
computer:
–
The wider signal cable has three connectors.
Two of these connectors attach
to installed drives and the third attaches to the primary IDE connector on
the back side of the riser card.
–
The narrower signal cable has two connectors.
They connect to the diskette
drive and the diskette drive connector on the riser card.
Note:
To locate connectors on the riser card, see “Adapters and the Riser Card” on
page 27.
The following are some important points to remember when connecting power and
signal cables to internal drives:
±
The diskette drive and hard disk drive that are preinstalled in your computer
come with power and signal cables attached.
Also, if your computer comes
with a CD drive, cables are attached.
If you replace any drives, it is important
to remember which cables are attached to which drives.
±
When a drive is installed, ensure that the drive connector at the end of the
signal cable is always connected to the drive; also, ensure that the drive
connector at the other end is connected to the riser card.
This reduces electronic
noise from the computer.
±
If more than one IDE device is used on a single cable, one must be designated
as the primary or master device and all others as secondary or subordinate
devices; 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.
Chapter
4.
Working with Adapters and Internal Drives
41