AOpen MX3W-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
COM1
PRINTER
JP14
VGA
JP12
JP28
JP23
COM2
JP27
2.1 Jumper and Connector Locations
The following figure shows the locations of the jumpers and connectors on the
system board:
CD-IN
WOM
MODEM-CN
P
P
C
I
3
P
C
C
I
I
2
1
IrDA
USB
KB2
PS/2 MS
WOL
SB-Link
PANEL
FAN1
FDC
CPUFAN1
DIMM1
DIMM2
IDE2
IDE1
2-2
Hardware Installation
Jumpers:
JP12: Enable/Disable Onboard Audio
JP14: Clear CMOS
JP23: DC/Host Clock Ratio
JP27: SPK Out
JP28: Enable/Disable KB/MS Wake Up
Connectors:
PS2: PS/2 mouse connector
KB: 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
CPUFAN1: CPU fan connector
CPU1: Housing fan connector
IrDA: IrDA (Infrared) connector
PANEL: Front panel (Multifunction) connector
CD-IN: CD-audio connector
MODEM-CN: Mono in (Pin 1-2) and Mic out (Pin 3-4)
WOM: Wake On Modem connector
WOL: Wake On LAN connector
SB-LINK: Sound Blaster Link
2-3
Hardware Installation
2.2 Jumpers
With the help of Celeron PPGA VID signal and SMbus, this motherboard is
jumper-less design.
2.2.1 Selecting the CPU Frequency
Celeron PPGA VID signal and SMbus clock generator provide CPU voltage
auto-detection and allow user to set CPU frequency through CMOS setup, no
jumper or switch is needed. The correct CPU information is saved into
EEPROM, with these technologies, the disadvantages of Pentium base jumperless design are eliminated. There will be no worry of wrong CPU voltage
detection and no need to re-open the housing if CMOS battery loss.
The CPU frequency selection is set by going into:
BOIS Setup à Frequency/Voltage Control à CPU FSB
(The possible setting is 66.8, 72, 75, 83.3, 90, 95, 100.2, 105, 107, 110, 112,
114, 117, 119, 121, 124, 125, 127, 129, 130, 133.6, 136, 138, 140, 145, 150,
and 155 MHz.)
BOIS Setup à Frequency/Voltage Control à CPU Ratio
(The possible setting is 3.0x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, and 8x)
Core frequency = CPU Ratio * CPU FSB
INTEL Celeron PPGA CPU Core Frequency CPU Ratio CPU FSB
Celeron PPGA 300A 300MHz= 4.5x 66MHz
Celeron PPGA 333 333MHz= 5x 66MHz
Celeron PPGA 350 350MHz= 3.5x 100MHz
Celeron PPGA 366 366MHz= 5.5x 66MHz
Celeron PPGA 400 400MHz= 6x 66MHz
Celeron PPGA 433 433MHz= 6.5x 66MHz
2-4
Warning: INTEL 810 chipset supports a maximum of 100MHz
CPU FSB, the higher clock settings are for internal test only.
These settings exceed the specification of the chipset, which
may cause serious system damage.
Hardware Installation
3
3
2.2.2 Setting the CPU Voltage
This motherboard supports Celeron PPGA VID function, the CPU core voltage
is automatically detected, the range is from 1.3V to 2.05V.
2.2.3 Clearing the CMOS
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 as below:
JP14
1
2
Normal Operation
JP14
1
2
Clear CMOS
(default)
The procedure to clear CMOS:
1. Turn off the system and unplug the AC 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.
Tip: If your system hangs or fails to boot because of overclocking, please clear CMOS and the system will go back to
the default setting (233MHz or 350MHz).
Tip: If your system hangs or fails to boot because of overclocking, simply use <Home> key to restore to the default
setting. By this smart design, it would be more convenient to
clear CPU frequency setting. For using this function, you just
need to press <Home> key first and then press Power button
2-5
Hardware Installation
3
3
3
3
at the same time. Note that do not release <Home> key until
POST screen appearing.
2.2.4 Sound
JP12
1-2
2-3
Sound
Enabled (default)
Disabled
2.2.5 KB/MS Wakeup
JP28
1-2
2-3
KB/MS Wakeup
Disabled
Enabled
If you want to install another sound card,
you have to disable the onboard audio by
setting this jumper to Disabled.
JP12
1
2
Enabled (default)
JP12
1
2
Disabled
This jumper is used to enable or disable
Keyboard/Mouse Power ON function. If you
select Enabled, you may decide the wakeup
mode from BIOS Setup. To implement this
function, the 5V Stand By current must be
greater than 800mA.
Note that only PS/2 mouse supports Wake On
Mouse function.
2-6
JP28
1
2
Disabled
JP28
1
2
Enabled
2.2.6 SPK Out
3
3
1 3 5
2 4 6
2 4 6
Hardware Installation
JP27
1-2
2-3
SPK Out
Disabled
Enabled
This jumper is used to enable or disable
speaker out.
2.2.7 DC/Host Clock Ratio
JP23
1-2
3-4
5-6
DC/Host Ratio
Auto (default)
1/1
3/2
To improve system performance, this motherboard
has implemented this jumper for setting the ratio of
the display cache and CPU external frequency.
JP27
1
2
Disabled
JP23
JP23
JP27
1
2
Enabled
JP23
2 4 6
Auto
(Default)
1 3 5
1/1
1 3 5
3/2
There is a "66/100" signal pin from CPU for the chipset to automatically identify
AGP clock, this is important for jumperless design. The default setting is Auto.
Auto: No matter what the CPU type is, the onboard AGP will run at 100MHz.
We recommend that you remain the default setting.
1/1: The display cache runs at a speed as same as the CPU external clock.
3/2: The display cache runs at a speed of 3/2 CPU external clock.
Below is a table for better understanding:
2-7
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