26 ASUS TXP4 User’s Manual
III. INSTALLATION
(Connectors)
III. INSTALLATION
5. Power Supply, CPU Fan, Chassis Fan Connectors (FAN)
This connector supports a 3-pin CPU cooling fan of 500mAmp (6watts) or less
with a minimum of 3,500RPM. 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! Damage may occur to the motherboard and/or the fans if these
pins are incorrectly used.
DO NOT PLACE JUMPER CAPS OVER THESE PINS.
Power Supply, CPU, 12-volt Chassis Fan Power
CPU Fan Power
Chassis Fan Power
Power Supply Fan
Ground
(NC)
+12 Volts
R
(NC)
Ground
+12 Volts
6. Primary / Secondary IDE Connectors (Two 40-pin blocks)
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, you must set the second drive to
Slave mode. Refer to the documentation of your hard disk for the jumper set-
tings. BIOS now supports SCSI device or IDE CD-ROM bootup (see HDD Se-
quence 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 Disk Drive) Connectors
Primary IDE Connector
Pin 1
Secondary IDE Connector
Orient the red stripe to Pin 1
R
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 may install one operating system on an IDE drive and an-
other on a SCSI drive, and then select the boot disk through the BIOS Features
Setup.
