Asus CUSI-M CUSI-M User Manual - Page 31

3. HARDWARE SETUP 12) IDE Activity LED (2-pin PLED) This connector supplies power to the cabinet's IDE activity LED. Read and write activity by devices connected to the Primary or Secondary IDE connectors will cause the LED to light up. TIP: If the case-mounted LED does not light, try reversing the 2-pin plug. 3. H/W SETUP Connectors 01 01 PLED ® CUSI-M CUSI-M IDE Activity LED 13) Power Supply (PWR_FAN), CPU (CPU_FAN), Chassis (CH_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 consideration 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 be monitored using ASUS PC Probe or Intel LDCM Utility. 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. GND +12V Rotation CPU_FAN PWR_FAN GND +12V Rotation ® CUSI-M CUSI-M 12-Volt Cooling Fan Power GND +12V Rotation CH_FAN ASUS CUSI-M User's Manual 31