User`s guide

Note
Use the primary IDE interface to connected 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.
Before you install a drive, identify pin 1 on the drive connector
so you know where it is when you connect the drive cable. On
a hard disk drive, turn it over so you can see the circuit board,
as shown below. Locate the side of the drive connector
containing pin 1, indicated by a “1” printed on the connector or
the board (a “2” may be printed beside the opposite row of pins
to indicate the side of the connector containing pin 1). On a
CD-ROM drive, check for a label identifying pin 1.
For hard disk drives, you may also want to make a note of the
drive parameters (such as cylinders, heads, etc.), in case the
SETUP auto-sensing feature cannot detect them when you
configure the drive. The parameters may be listed on a drive
label or in the drive documentation.
Installing and Removing Drives in the Slimline Computer 5-3