Connecting Front Panel Cable - AOpen AX45F-4D Installation Manual

3. Connecting ATX Power Connector
This motherboard comes with a 20-pin and 4-pin ATX power connector as shown below.
Make sure you plug in the right direction. We strongly recommend you to insert the 4-pin
connector before connecting the 20-pin 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.
1
Power Switch
ACPI & Power LED
IDE LED
1
NC
SPWR
NC
GND
SPEAKER
+5V
ACPILED-
RESET
IDE LED
GND
IDE LED
ACPILED+
+5V
NC
+5V
NC
GND
GND
NC
RESET
SPEAKER
GND
5. Setting CPU Voltage & Frequency
Full-range Adjustable CPU Core Voltage
This motherboard supports CPU VID function. The CPU core voltage will be automatically
detected and the range is from 0.8375V to 1.6000V. It is not necessary to set CPU Core
Voltage.
Setting CPU Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency through the
BIOS setup, and no jumpers or switches are needed.
BIOS Setup > Frequency / Voltage Control > CPU Bus Frequency
Core Frequency = CPU FSB Clock * CPU Ratio
CPU Ratio 8x, 10x... 24x, 25x, 26x, 27x, 28x
CPU FSB
FSB = 100MHz-248MHz by 1MHz Stepping
(Adjustment manually)
CPU Overclocking
Northwood CPU Core FSB
CPU Frequency Clock
Pentium 4 1.8G 1800MHz 100MHz
Pentium 4 2.0G 2000MHz 100MHz
Pentium 4 2.2G 2200MHz 100MHz
Pentium 4 2.2G 2200MHz 133MHz
Pentium 4 2.26G 2260MHz 133MHz
Pentium 4 2.4G 2400MHz 100MHz
Pentium 4 2.4G 2400MHz 133MHz
Pentium 4 2.53G 2530MHz 133MHz
Pentium 4 2.6G 2600MHz 200MHz
Pentium 4 2.66G 2660MHz 133MHz
Pentium 4 2.8G 2800MHz 133MHz
Pentium 4 2.8G 2800MHz 200MHz
Pentium 4 3.06G 3066MHz 133MHz
Pentium 4 3.20G 3200MHz 200MHz
Note:
With CPU speed changing rapidly, there might be fastest CPU on
the market by the time you received this installation guide. This table is
kindly for your references only.
Note: SiS
chipset only
Northwood
System
(also support
Ratio
Bus
CPU with
400MHz 18x
core).
processor would detect
400MHz 20x
the clock
400MHz 22x
automatically;
533MHz 16x
not be able to adjust the
clock ratio
533MHz 17x
manually.
400MHz 24x
533MHz 18x
533MHz 19x
800MHz 13x
533MHz 20x
Warning: SiS655FX/964
chipset support maximum
533MHz 21x
800MHz
800MHz 14x
system bus and 66MHz
533MHz 23x
AGP clock; higher clock
setting may cause serious
800MHz 16x
system damage.
655FX/964
support
processor
Celeron
Northwood
Northwood
ratio
you may
in BIOS
(200MHz*4)