Chapter 5 65
CPU FAN (4pin)
Clear CMOS
Intruder
J3 (for customer Acer requested)
Illustration Pin Signal Name
1 Ground
2 FAN POWER 12V
3 SIO FANSPD
4FANOUT
5Key
Silk Screen Footprint Schematic Part
CPU_FAN
HFAN4M_M1 CONN3(FAN4P)
Illustration Description Pin Signal Name
3 Pin
1Ground
2 RTCRSTJ (Connect to ICH)
Normal (Default)
Set pin 2 and pin 3 closed
3 3 Connect to VCC_RTC
Clear CMOS
Set pin 1 and pin 2 closed
Silk Screen Footprint Schematic Part
CLR_CMOS
H3M HEADER_1X3
Illustration Pin Signal Name
1 INTRUDERJ
2Ground
Silk Screen Footprint Schematic Part
INTR
H2M HEADER_1X2
Illustration Pin Signal Name
1AGPIO1
2Ground
Silk Screen Footprint Schematic Part
INTR
H2M HEADER_1X2
5