Acer Aspire G5900 Service Guide - Page 80

Connecting Case Components After you have installed the motherboard into a case, you can begin connecting themotherboard components. Refer to the following: 1. Connect the CPU cooling fan cable to CPU_FAN. 2. Connect the standard power supply connector to ATX1. 3. Connect the case switches and indicator LEDs to the F_PANEL. 4. Connect the system cooling fan connector to SYS_FAN. 5. Connect the auxiliary case power supply connector to ATX_12V. CPU_FAN1: CPU Cooling FAN Power Connector Pin Signal Name 1 GND 2 +12V 3 Sense 4 PWM Function System Ground Power +12V Sensor PWM ATX_POWER: ATX 24-pin Power Connector Pin Signal Name 1 +3.3V 2 +3.3V 3 Ground 4 +5V Pin Signal Name 13 +3.3V 14 -12V 15 Ground 16 PS_ON Chapter 5 72