AOpen AX6F-HW User Manual
Chapter 2
Hardware Installation
This chapter gives you a step-by-step procedure on how to install your
system. Follow each section accordingly.
Caution: Electrostatic discharge (ESD) can
damage your processor, disk drives,
expansion boards, and other components.
Always observe the following precautions
before you install a system component.
1. Do not remove a component from its
protective packaging until you are ready
to install it.
2. Wear a wrist ground strap and attach it
to a metal part of the system unit before
handling a component. If a wrist strap is
not available, maintain contact with the
system unit throughout any procedure
requiring ESD protection.
2-1
Hardware Installation
1
2
3
JP3 JP2 JP1
JP6
2.1 Jumper and Connector Locations
The following figure shows the locations of the jumpers and connectors on the
system board:
I
S
A
PANEL
I
S
A
IrDA
Jumpers:
I
S
A
JP14
HDD LED
COM2
P
P
P
P
P
C
I
5
C
I
4
BIOS
C
I
3
SPWR
FDC
C
C
I
I
1
2
USB
PRINTER KB MS
JP5
CPU SLOT 1
IDE1
IDE2
COM1
S IMM1
S IMM2
S IMM3
SIMM4
FAN
PWR2
JP1,JP2,JP3: CPU frequency ratio
JP5: CPU bus clock (chipset)
JP6: CPU bus clock (clock generator)
JP14: Clear CMOS
2-2
Hardware Installation
Connectors:
PS2 MS: PS/2 mouse connector
KB2: PS/2 keyboard connector
COM1: COM1 connector
COM2: COM2 connector
PRINTER: Printer connector
PWR2: ATX power connector
USB: USB connector
FDC: Floppy drive connector
IDE1: IDE1 primary channel
IDE2: IDE2 secondary channel
FAN: CPU fan connector
IrDA: IrDA (Infrared) connector
HDD LED: HDD LED connector
PANEL: Front panel (Multifunction) connector
2-3
Hardware Installation
3
3
2.2 Jumpers
Jumpers are made by pin headers and plastic connecting caps for the
purpose of customizing your hardware. Doing so requires basic knowledge of
computer hardware, be sure you understand the meaning of the jumpers
before you change any setting. The onboard jumpers are normally set to their
default with optimized settings.
On the mainboard, normally there is a bold line marked beside pin 1 of the
jumper, sometimes, there are numbers also. If we connect (short) plastic cap
to pin 1 and 2, we will say set it at 1-2, and when we say jumper is open, that
means no plastic cap connected to jumper pins.
Open
1
2
Short
1
2
Jumper set at 1-
1
2
Jumper set at 2-3
1
2
2
2-4
Hardware Installation
2.2.1 Selecting the CPU Frequency
JP1
2-3
1-2
1-2
1-2
1-2
2-3
2-3
2-3
2-3
1-2
1-2
1-2
1-2
2-3
JP2
1-2
1-2
1-2
2-3
2-3
1-2
1-2
2-3
2-3
1-2
1-2
2-3
2-3
1-2
JP3
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
CPU Frequency Ratio
1.5x
2x
2.5x
3x
3.5x
4x
4.5x
5x
5.5x
6x
6.5x
7x
7.5x
8x
Intel Pentium II (Klamath)
is designed to have
different Internal (Core) and
External (Bus) frequency.
The ratio of Core/Bus
frequency is selected by
JP1, JP2 and JP3, which
CPU is using to multiply
external clock and produce
internal frequency.
Core frequency = Ratio * External bus clock
JP3 & JP2 & JP1
1
2
3
3x
JP3 & JP2 & JP1
1
2
3
3.5x
JP6
1-2
2-3
JP5
1-2
2-3
CPU External Clock
66MHz (default)
60MHz
JP3 & JP2 & JP1
1
2
3
JP3 & JP2 & JP1
4x
JP6 and JP5 are selection of CPU
external clock (bus clock). JP6 is
actually the selection of clock from
clock generator and JP5 is used to
inform chipset the CPU bus clock.
4.5x
1
2
3
2-5
Hardware Installation
3
3
3
JP6
JP5
JP6 & JP5
1 2 3
66MHz
1
2
JP6 & JP5
1 2 3
60MHz
1
2
(default)
Caution: Following table are possible settings of
current CPU available on the market. The correct
setting may vary because of new CPU product,
refer to your CPU specification for more details.
INTEL
Pentium II
Klamath 200 200MHz = 3x 66MHz 1-2 & 2-3 & 1-2 1-2 & 1-2
Klamath 233 233MHz = 3.5x 66MHz 2-3 & 2-3 & 1-2 1-2 & 1-2
Klamath 266 266MHz = 4x 66MHz 1-2 & 1-2 & 2-3 1-2 & 1-2
CPU Core
Frequency
Ratio External
Bus Clock
JP3 & JP2 & JP1 JP6 & JP5
2.2.2 Setting the CPU Voltage
JP7~JP11
Open
CPU Core Voltage
CPU voltage autodetection (default)
JP7~JP11 is reserved for test only and
will be removed after mass production.
This mainboard supports Pentium II
(Klamath) VID function, the CPU core
voltage is automatic detected, the
range is from 1.3V to 3.5V.
JP11,JP10,JP9,JP8,JP7
1
2
Open for Auto-detection
2-6
2.2.3 Clearing the CMOS
3
3
Hardware Installation
JP14
1-2
2-3
Clear CMOS
Normal operation
(default)
Clear CMOS
You need to clear the CMOS if you forget your
system password. To clear the CMOS, follow
the procedures listed below:
JP14
1
2
Normal Operation
JP14
1
2
Clear CMOS
(default)
The procedure to clear CMOS:
1. Turn off the system power.
2. Remove ATX power cable from connector PWR2.
3. Locate JP14 and short pins 2-3 for a few seconds.
4. Return JP14 to its normal setting by shorting pins 1-2.
5. Connect ATX power cable back to connector PWR2.
6. Turn on the system power.
7. Press during bootup to enter the BIOS Setup Utility and specify a
new password, if needed.
2-7
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