Connecting Front Panel Cable - AOpen AX4GER Easy Installation Manual

3. Installing CPU & System Fan
Plug in the CPU fan cable to the 3-pin CPUFAN1 connector. If you have chassis fan, you
can also plug it on SYSFAN2 or SYSFAN3 connector.
SYSFAN3 Connector

4. Connecting Front Panel Cable

Attach the power LED, speaker, and reset switch connectors to
the corresponding pins. If you enable "Suspend Mode" item in
BIOS Setup, the ACPI & Power LED will keep flashing while the
system is in suspend mode.
Locate the power switch cable from your ATX housing. It is 2-pin
female connector from the housing front panel. Plug this
connector to the soft-power switch connector marked SPWR.
SYSFAN2 Connector
CPUFAN1 Connector
Note: Some CPU fans do not have
GND
sensor pin so they cannot support fan
+12V
SENSOR
monitoring.
1
IDE LED
Speaker
1
NC
NC
+5V
IDE LED
IDE LED
+5V
+5V
GND
NC
SPEAKER
5. Setting CPU Voltage & Frequency
Setting CPU Core Voltage
This motherboard supports CPU VID function. The CPU core voltage will be automatically
detected and the range is from 1.10V to 1.85V. It is not necessary to set CPU core
voltage.
GND
Setting CPU Frequency
+12V
This motherboard is CPU jumper-less design, you can set CPU frequency through the
SENSOR
BIOS setup, and no jumpers or switches are needed.
BIOS Setup > Frequency / Voltage Control > CPU Speed Setting
Core Frequency = CPU FSB Clock * CPU Ratio
SENSOR
CPU Ratio
+12V
GND CPU FSB
Northwood CPU CPU Core Frequency
Pentium 4 1.6G
Pentium 4 1.6G
Pentium 4 1.7G
Pentium 4 1.8G
Pentium 4 2.0G
Pentium 4 2.2G
Pentium 4 2.26G
Pentium 4 2.4G
Pentium 4 2.4G
Pentium 4 2.53G
Pentium 4 2.66G
Pentium 4 2.8G
SPWR
ACPI & PWR
Willamette CPU
LED
Pentium 4 1.5G
ACPILED
(Blue)
Pentium 4 1.6G
Reset
Pentium 4 1.7G
Pentium 4 1.8G
5VSB
Pentium 4 1.9G
SPWR
ACPI LED-
Pentium 4 2.0G
GND
ACPILED
NC
Celeron CPU
ACPI_B
GND
1.7G
RESET
GND
1.8G
8x, 9x, 10x... 21x, 22x, 23x, 24x
100~248MHz
FSB Clock System Bus
1600MHz 100MHz 400MHz
1600MHz 133MHz 533MHz
1700MHz 133MHz 533MHz
1800MHz 100MHz 400MHz
2000MHz 100MHz 400MHz
2200MHz 100MHz 400MHz
2260MHz 133MHz 533MHz
2400MHz 100MHz 400MHz
2400MHz 133MHz 533MHz
2530MHz 133MHz 533MHz
2660MHz 133MHz 533MHz
2800MHz 133MHz 533MHz
CPU Core FSB System
Ratio
Frequency Clock Bus
1500MHz 100MHz 400MHz 15x
1600MHz 100MHz 400MHz 16x
1700MHz 100MHz 400MHz 17x
1800MHz 100MHz 400MHz 18x
1900MHz 100MHz 400MHz 19x
400MHz
2000MHz 100MHz 20x
CPU Core FSB System
Ratio
Frequency Clock Bus
1700MHz 100MHz 400MHz 17x
1800MHz 100MHz 400MHz 18x
Ratio
16x
12x
13x
18x
20x
22x
17x
24x
18x
19x
20x
21x
Warning: Intel 845GE
supports maximum
533MHz system bus and
66MHz AGP clock; higher
clock setting may cause
serious system damage.
Note: Since the latest
processor, Northwood,
would detect the clock
ratio automatically, you
may not be able to adjust
the clock ratio in BIOS
manually.