AOpen 6BCZ-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
JP14
FAN
CPU FAN
PWR2
COM1
PRINTER
COM2
JP23
JP28
2.1 Jumper and Connector Locations
The following figure shows the locations of the jumpers and connectors on the
system board:
IrDA
I
S
A
PANEL
I
S
A
Modem-WKUP
BIOS
P
C
I
5
C
C
I
I
3
4
C
C
I
I
1
2
P
P
P
P
FDC
A
G
P
CPU SLOT 1
IDE2
IDE1
USB
DIMM1
DIMM2
DIMM3
KB
PS/2
2-2
Hardware Installation
Jumpers:
JP14: Clear CMOS
JP23: AGP Ratio
JP28: Keyboard/Mouse 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
CPUFAN: CPU Fan connector
FAN: Housing Fan connector
IrDA: IrDA (Infrared) connector
PANEL: Front panel (Multifunction) connector
WOM: Wake On Modem connector
WOL: Wake On LAN connector
SB-LINK: Sound Blaster Link connector
Warning: This motherboard supports 4 PCI master card, so you
can only install PCI slave card on PCI 5, for example, a PCI VGA
card.
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
Pentium II / Pentium III / Celeron VID signal and the SMbus clock generator
provide CPU voltage auto-detection and allow the user to set CPU frequency
through the CMOS setup, no jumpers or switches are needed. The correct CPU
information is saved into the EEPROM. With these technologies, the
disadvantages of the Pentium based jumper-less design are eliminated. There
will be no worry of wrong CPU voltage detection and no need to re-open the
housing if the CMOS battery is lost.
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, 68.5, 75, 83.3, 100, 103, 112, 117, 124, 129,
133.3, 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 = Ratio * External bus clock
INTEL Pentium II CPU Core Frequency Ratio External Bus Clock
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
Celeron 266 266MHz = 4x 66MHz
Celeron 300 300MHz = 4.5x 66MHz
Celeron 300A 300MHz = 4.5x 66MHz
2-4
Hardware Installation
1 2 3
INTEL Pentium II CPU Core Frequency Ratio External Bus Clock
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: The INTEL 440ZX chipset supports a maximum of
100MHz FSB clock, the higher clock settings are for internal test
only. These settings exceed the specification of the ZX 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.
For overclocking, the CPU voltage also can be adjusted in the BIOS Setup. The
CPU voltage is adjustable by going into:
Chipset Features à CPU Voltage Set to
However, note that enlarging the core voltage is probably harmful to your CPU.
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 procedure below:
JP14
1 2 3
Normal Operation
(default)
JP14
Clear CMOS
2-5
Hardware Installation
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 the CMOS and the system will go back
to its default setting (233MHz).
Tip: If your system hangs or fails to boot because of overclocking, simply use the <Home> key to restore the default
setting (233MHz). By this smart design, it would be more
convenient to clear CPU frequency setting. For using this
function, you just need to press the <Home> key first and
then press the Power button at the same time. Note: do not
release the <Home> key until the POST screen appears.
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