Asus P5-99B User Manual page 34

III. HARDWARE SETUP
7. Primary / Secondary IDE Connectors (Two 40-1 pin block)
These connectors support the provided IDE hard disk ribbon cable. After con-
necting the single end to the board, connect the two plugs at the other end to
your hard disk(s). If you install two hard disks on the same channel, you must
set the second drive to Slave mode. Refer to the documentation of your hard
disk for the jumper settings. BIOS now supports SCSI device or IDE CD-ROM
bootup (see HDD Sequence SCSI/IDE First & Boot Sequence in the BIOS Fea-
tures Setup under BIOS SETUP) (Pin 20 is removed to prevent inserting in
the wrong orientation when using ribbon cables with pin 20 plugged).
P5-99B IDE Connectors
TIP:
You may configure two hard disks to be both Masters using one ribbon
cable on the primary IDE connector and another ribbon cable on the secondary
IDE connector. You may install one operating system on an IDE drive and an-
other on a SCSI drive and select the boot disk through BIOS Features Setup.
8. IDE Activity LED (IDELED, 2 pins)
This connector supplies power to the cabinet's IDE activity LED. Read and
write activity by devices connected to the Primary or Secondary IDE connectors
will cause the LED to light up.
P5-99B IDE Activity LED
34
Secondary IDE Connector
Pin 1
Primary IDE Connector
NOTE: Orient the red markings (usually zigzag)
on the IDE ribbon cable to pin 1
TIP: If the case-mounted LED does not light,
try reversing the 2-pin plug.
IDELED
ASUS P5-99B User's Manual