Asus X900-PI4 - Manual (Page 33)

ASUS P4T User’s Manual 33
3. HARDWARE SETUP
Connectors
3. H/W SETUP
8) Floppy Disk Drive Connector (34-1pin FLOPPY)
This connector supports the provided floppy drive ribbon cable. After connect-
ing the single end to the board, connect the two plugs on the other end to the
floppy drives. (Pin 5 is removed to prevent inserting in the wrong orienta-
tion when using ribbon cables with pin 5 plugged).
P4T
®
NOTE: Orient the red markings on
the floppy ribbon cable to PIN 1.
P4T Floppy Disk Drive Connector
PIN 1
FLOPPY
9) Chassis (PCI_FAN), CPU (CPU_FAN), Power Supply (MAIN_FAN) Fan
Connectors (3 pins)
These connectors support cooling fans of 350mA (4.2 Watts) or less. Orientate
the fans so that the heat sink fins allow airflow to go across the onboard heat
sink(s) instead of the expansion slots. Depending on the fan manufacturer, the
wiring and plug may be different. The red wire should be positive, while the
black should be ground. Connect the fan’s plug to the board taking into consid-
eration the polarity of the connector.
NOTE: The “Rotation” signal is to be used only by a specially designed fan with
rotation signal. The Rotations per Minute (RPM) can monitored using a utility such
as ASUS PC Probe or Intel LDCM.
WARNING! The CPU and/or motherboard will overheat if there is no airflow
across the CPU and onboard heatsinks. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used. These are not jumpers,
do not place jumper caps over these pins.
P4T
®
P4T 12-Volt Cooling Fan Power
MAIN_FAN
CPU_FAN
GND
Rotation
+12V
PCI_FAN
GND
Rotation
+12V
GND
Rotation
+12V
(for power supply fan)
(for chassis fan)