Fan Power, Switched (CN15) The switched fan power connector (CN15) is an optional fan connector which allows the system to power the fan only when the processor temperature reaches high temperatures. To utilize this connector, refer to the Thermal Management section on page 72. Table 37 BDM-610000063 Rev F Fan Power, Switched (CN15) Pin Signal 1 CPU_FAN_PWM 2 GND Function +5 Volts DC, switched Ground Chapter 3: Connecting the cpuModule 53