Asus P4B533 - Manual (Page 54)

2-28 Chapter 2: Hardware information
7. CPU, Chassis, and Power Fan Connectors
(3-pin CPU_FAN, PWR_FAN, CHA_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W
max.) or a total of 1A~2.22A (26.64W max.) at +12V. Connect the fan
cables to the fan connectors on the motherboard, making sure that the
black wire of each cable matches the ground pin of the connector.
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!
P4B533
®
P4B533 12-Volt Fan Connectors
CPU_FAN
PWRFAN
CHA_FAN
GND Rotation +12V
GND Rotation +12V
GND Rotation +12V
P4B533
®
P4B533 Power Supply Thermal Connector
Ground
TRPWR
TRPWR
8. Power supply thermal connector (2-pin TRPWR)
If your power supply has a thermal monitoring feature, connect its
thermal sensor cable to this connector.