IBM Aptiva Handbook page 90

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When you install a drive of any type, you must attach the
signal cable (also called the data cable) from the drive to a
connector on the system board. The following table identifies
each connector on the system and the type of drive that
uses the connection. Note that the first two connectors are
for IDE/ATA ATAPI drives (such as hard disk drives and CD-
ROM drives), while the third connector is for diskette
interface drives (such as diskette drives or tape drives).
Use the following illustration to identify the signal cable
connectors on your system board:
System board Interface
connector type
IDE/ATA
Primary IDE – J101
ATAPI
Secondary IDE – IDE/ATA
ATAPI
J104
Standard
Diskette – J102
diskette
8-6 Chapter 8: Adding and removing adapter cards and drives
Type of drive using the
connector
Preferred location for the
hard disk drives.
Preferred location for a
CD-ROM drive.
Diskette and tape drives
When attaching a drive signal cable to any of these
connectors, take note of the pin 1 indicator (usually marked
by colored stripes or dots) on the edge of the cable to ensure
it aligns with pin 1 on the connector.
In your computer, the IDE and diskette connectors on the
system board and cables have guides that allow the cable to
be inserted one way only.