Intel YM430TX User Manual page 26

5. CPU Cooling Fan Connector (FAN)
This connector supports a three-pin CPU cooling fan of 500 mA (6 watts) or less
with a minimum of 3,500 RPM. Depending on the fan manufacturer, the wiring
and plug may be different. The red wire should be positive and the black wire
should be ground.
WARNING! Using these pins incorrectly can damage the motherboard and the
CPU fan. These are not jumpers. Do not place jumper caps over these pins.
12Volt CPU Fan Power
6. Primary / Secondary IDE connectors (two 40-pin blocks)
These connectors support the provided IDE hard disk ribbon cable. Connect the
single end to the board, then connect the two plugs at the other end to your hard
disk(s). If you install two hard disks, 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 Features Setup of the BIOS
software). (Pin 20 is removed to prevent inserting in the wrong orientation
when using ribbon cables with pin 20 plugged).
IDE (Hard Drive) Connectors
TIP: You can 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 can install one operating system on an IDE drive and an-
other on a SCSI drive, then select the boot disk through BIOS Features Setup.
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CPU Fan Power
Pin 1
Connect the Red stripe to Pin 1
Secondary IDE Connector
Primary IDE Connector
Intel YM430TX User's Manual