User`s guide

Setting the IDE Device Jumpers and Locating Pin 1
Before you install any IDE devices, you need to check or
change the settings of the device’s jumpers to be sure they are
set correctly. The jumpers indicate the master and slave
configuration of devices connected to both of the IDE
interfaces.
A table in the “Hard Disk Drive Information” section of the
Appendix lists the master and slave jumper settings for the IDE
hard disk drives that are qualified for use in your computer. If
your hard disk drive is not listed in that table, check the
documentation that came with it or call the manufacturer for
the jumper settings.
If you are installing another type of IDE device, such as an IDE
CD-ROM drive, check the documentation that came with the
device for the master and slave jumper settings.
Note
Use the primary IDE interface to connect only IDE hard disk
drives. You must connect any other type of IDE devices to
the secondary IDE interface. Never connect an IDE CD-ROM
drive to the same interface used by an IDE hard disk drive.
Installing and Removing Drives in the Tower Computer 6-3