AOpen MX6B-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
JP28
JP23
2.1 Jumper and Connector Locations
The following figure shows the locations of the jumpers and connectors on the
system board:
MODEM-CN CD-IN
USB
I
S
A
1
PANEL
FAN1
P
C
I
3
BIOS
WOL
WOM
P
P
C
C
I
I
2
1
A
G
P
IDE2
IDE1
IrDA
DIMM1
DIMM2
DIMM3
PWR2
FDC
KB2
PS/2 MS
CPUFAN1
2-2
Hardware Installation
Jumpers:
JP14: Clear CMOS
JP23: AGP Ratio
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
FAN1: 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
2-3
Hardware Installation
2.2 Jumpers
With the help of Pentium II / Pentium III / Celeron 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 Chipset Features Setup à CPU Clock Frequency
(The possible setting is 66.8, 75, 83.3, 100, 103, 112, 124/31, 124/41, 133/33,
133/44, , 138, 143, 148 and 153 MHz)
BOIS Setup à Chipset Features Setup à CPU Clock Ratio
(The possible setting is 1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x,
7.5x, and 8x)
Core frequency = CPU Ratio * CPU FSB
Intel Pentium II
/Pentium III
Pentium II - 233 233MHz = 3.5x 66MHz
Pentium II - 266 266MHz = 4x 66MHz
Pentium II - 300 300MHz = 4.5x 66MHz
Pentium II - 333 333MHz = 5x 66MHz
Pentium II - 350 350MHz= 3.5x 100MHz
Pentium II - 400 400MHz= 4x 100MHz
Pentium II - 450 450MHz= 4.5x 100MHz
Pentium III - 450 450MHz = 4.5x 100MHz
Pentium III - 500 500MHz = 5x 100MHz
Pentium III - 550 550MHz = 5.5x 100MHz
CPU Core Frequency Ratio External Bus Clock
INTEL Celeron CPU Core Frequency Ratio External Bus Clock
2-4
Hardware Installation
3
3
INTEL Celeron CPU Core Frequency Ratio External Bus Clock
Celeron 266 266MHz = 4x 66MHz
Celeron 300 300MHz = 4.5x 66MHz
Celeron 300A 300MHz = 4.5x 66MHz
Celeron 333 333MHz = 5x 66MHz
Celeron 366 366MHz = 5.5x 66MHz
Celeron 400 400MHz = 6x 66MHz
Celeron 433 433MHz = 6.5x 66MHz
Celeron 466 466MHz = 7x 66MHz
Warning: INTEL 440ZX/BX chipset supports a maximum of
100MHz FSB, the higher clock settings are for internal test only.
These settings exceed the specification of ZX/BX chipset,
which may cause serious system damage.
2.2.2 Setting the CPU Voltage
This motherboard supports Pentium II \ Pentium III \ Celeron VID function, the
CPU core voltage is automatically detected, the range is from 1.3V to 3.5V.
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)
2-5
Hardware Installation
1 2 3
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 over-clocking,
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 over-clocking,
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 at the same time. Note that do
not release <Home> key until POST screen appearing.
2.2.4 KB/MS Wakeup
JP28
1-2
2-3
2-6
KB/MS Wakeup
Disabled
Enabled
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.
JP28
1 2 3
Disabled
JP28
Enabled
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