Asus P4B-E P4B-E User Manual - Page 52

Hardware information, CPU, Chassis, and Power Fan Connectors, pin CPU_FAN, PWR_FAN,

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6. CPU, Chassis, and Power Fan Connectors (3-pin CPU_FAN, PWR_FAN, CHA_FAN) The three fan connectors support cooling fans of 350mA (4.2 Watts) or a total of 1A (12W) at +12V. Orient the fans so that the heatsink fins allow air flow to go across the onboard heatsink(s) instead of the expansion slots. The fan wiring and plug may vary depending on the fan manufacturer. Connect the fan cable to the connector matching the black wire to the ground pin. Do not forget to connect the fan cables to the fan connectors. Lack of sufficient air flow within the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors! CPU_FAN Rotation +12V GND P4B-E ® PWR_FAN CHA_FAN GND +12V Rotation GND +12V Rotation P4B-E 12-Volt Fan Connectors Figure 2-40 CPU, Chassis, and Power Fan Connectors 7. USB Header (10-1 pin USB23) If the USB port connectors on the rear panel are inadequate, a USB header is available for two additional USB port connectors. Connect a 2-port USB connector set to the USB header and mount the USB bracket to an open slot in the chassis. P4B-E ® P4B-E USB Header Figure 2-41 USB Header 2-30 USB23 1 5 6 10 1: USB Power 2: USBP2- 3: USBP2+ 4: GND 5: NC 6: USB Power 7: USBP3- 8: USBP3+ 9: GND Chapter 2: Hardware information

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2-30
Chapter 2: Hardware information
6.
CPU, Chassis, and Power Fan Connectors
(3-pin CPU_FAN, PWR_FAN, CHA_FAN)
The three fan connectors support cooling fans of 350mA (4.2 Watts) or
a total of 1A (12W) at +12V. Orient the fans so that the heatsink fins
allow air flow to go across the onboard heatsink(s) instead of the
expansion slots.
The fan wiring and plug may vary depending on the
fan manufacturer. Connect the fan cable to the connector matching the
black wire to the ground pin.
Figure 2-40
CPU, Chassis, and Power Fan Connectors
Figure 2-41
USB Header
Do not forget to connect the fan cables to the fan connectors. Lack of
sufficient air flow within the system may damage the motherboard
components. These are not jumpers! DO NOT place jumper caps on
the fan connectors!
7.
USB Header (10-1 pin USB23)
If the USB port connectors on the rear panel are inadequate, a USB
header is available for two additional USB port connectors. Connect a
2-port USB connector set to the USB header and mount the USB
bracket to an open slot in the chassis.
P4B-E
P4B-E 12-Volt Fan Connectors
PWR_FAN
CHA_FAN
GND
Rotation
+12V
CPU_FAN
GND
Rotation
+12V
GND
Rotation
+12V
P4B-E
P4B-E USB Header
USB23
1
5
6
10
1: USB Power
2: USBP2–
3: USBP2+
4: GND
5: NC
6: USB Power
7: USBP3–
8: USBP3+
9: GND