Lenovo PC 300PL User guide for IBM PC300PL (type 6584, 6594) systems - Page 85

Important

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Important If you want to add another device, and your computer does not come with a CD-ROM 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 riser card; 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 slave device). If your computer comes with a CD-ROM drive, it will have an ATA 33 signal cable. However, if you are installing an ATA 66 hard disk and want to take advantage of the faster rates, you must obtain an ATA 66 signal cable, 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 hard disk will operate at the faster 66 MHz rate, but the CD-ROM drive will still operate at the slower ATA 33 rate. - The narrower signal cable has two connectors for attaching the diskette drive to the diskette-drive connector on the riser card. Note: To locate connectors on the riser card, see "Locating components on the riser card" on page 65. The following are some important points to remember when connecting power and signal cables to internal drives: 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. 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 primary or master device and the other as the secondary, subordinate, or slave device; otherwise, the system might not recognize some of the IDE devices. The primary or secondary designation is determined by switch or jumper settings on each IDE device. 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. Chapter 5. Installing options 71

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Important
If you want to add another device, and your computer
does not come with a CD-ROM 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 riser card; 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 slave device).
If your computer comes with a CD-ROM drive, it will
have an ATA 33 signal cable.
However, if you are
installing an ATA 66 hard disk and want to take
advantage of the faster rates, you must obtain an ATA 66
signal cable, 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 hard
disk will operate at the faster 66 MHz rate, but the
CD-ROM drive will still operate at the slower ATA 33 rate.
–
The narrower signal cable has two connectors for attaching the
diskette drive to the diskette-drive connector on the riser card.
Note:
To locate connectors on the riser card, see “Locating components on
the riser card” on page
65.
The following are some important points to remember when connecting
power and signal cables to internal drives:
±
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.
±
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 primary or master device and the other as the secondary,
subordinate, or slave device; otherwise, the system might not recognize
some of the IDE devices.
The primary or secondary designation is
determined by switch or jumper settings on each IDE device.
±
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.
Chapter 5.
Installing options
71