IBM IntelliStation M Pro Type 6868 User Manual page 101

recognized by the system. The primary or secondary designation is
determined by switch or jumper settings on each IDE device.
To optimize performance when installing more than two IDE hard disk
drives, be sure to attach IDE hard disk drives with faster data transfer
speeds (mode 1 or higher) to the primary hard disk drive signal cable
(hard disk drives 0 and 1).
To install more than two IDE hard disk drives, you must purchase an
additional signal cable. The cable must meet the following
specifications:
– Maximum length: 0.46 meters (18 inches)
– Wire size: 28 AWG
– Cable capacitive loading: 200 pF maximum
If you want to install more than one diskette drive, you must purchase
a four-wire, Y-cable that provides two power connectors.
To attach an external drive, you must install an appropriate adapter in
the computer.
For help in selecting drives, cables, and other options for your computer, do
one of the following:
Within the United States, call 1-800-IBM-2YOU (1-800-426-2968), your
IBM reseller, or your IBM marketing representative.
Within Canada, call 1-800-565-3344 or 1-800-465-7999.
Outside the United States and Canada, contact your IBM reseller or
IBM marketing representative.
Drive bays
Drive bays 1, 4, and 7 come with drives preinstalled.
Drive bays 2 and 3 have a bay panel and static shield installed.
Drive bay 2 has a preinstalled 3.5-inch conversion bracket. You must
remove it to install a 5.25-inch drive.
In the lower drive bracket (bays 5, 6, and 7), when a 25.4mm (1.6-in.)
high drive is installed, there is room for only one additional drive to be
installed.
If you remove a drive which has removable media and you do not
intend to install a new drive immediately, reinstall the static shield and
bay panel for that bay.
Chapter 5. Installing options
85