Asus P I-P55T2P4 User Manual - Page 30
CPU Cooling Fan Connector FAN, WARNING, These are not, jumpers, do not place jumper caps over these
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III. INSTALLATION 14. CPU Cooling Fan Connector (FAN) This connector supports a CPU cooling fan of 500mAMP (6WATT) or less. Orientate the fan 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 consideration the polarity of the this connector. 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. III. INSTALLATION (Connectors) Air Flow FAN GND +12V CPU Fan Power Air Flow 15. IrDA-Compliant Infrared Module Connector (IR) This connector supports the optional wireless transmitting and receiving infrared module. This module mounts to a small opening on system cases that support this feature. You must also configure the setting through BIOS setup on page 36 "UART2 Use Infrared" to select whether UART2 is directed for use with COM2 or IrDA. Use the five pins as shown on the Back View and connect a ribbon cable from the module to the motherboard according to the pin definitions. Front View Back View +5V IRRX IRTX NC GND Infrared Module Connector IRTX +5V GND NC IRRX 24 ASUS P/I-P55T2P4 User's Manual