AOpen MX33 is an ATX motherboard that supports Intel® Pentium® III and Celeron™ processors with speeds ranging from 300MHz to 1GHz. It features three 168-pin DIMM sockets for up to 1.5GB of SDRAM, and a 4X AGP expansion slot for high-speed graphics cards. The MX33 also includes onboard AC'97 sound, a PS/2 mouse and keyboard port, a parallel port, two serial ports, a game port, and four USB ports. Additionally, it has a built-in Wake on LAN (WoL) feature, allowing you to remotely power on the computer.
AOpen MX33 is an ATX motherboard that supports Intel® Pentium® III and Celeron™ processors with speeds ranging from 300MHz to 1GHz. It features three 168-pin DIMM sockets for up to 1.5GB of SDRAM, and a 4X AGP expansion slot for high-speed graphics cards. The MX33 also includes onboard AC'97 sound, a PS/2 mouse and keyboard port, a parallel port, two serial ports, a game port, and four USB ports. Additionally, it has a built-in Wake on LAN (WoL) feature, allowing you to remotely power on the computer.
2Mbit Flash ROM
Multilanguage BIOS
Virus Protection
Wake On RTC Time
r
IrDA Connecto
r
JP14 Clear CMOS
VIA 694X Chipset
Support 133MHz FSB Clock
Battery-less &
long-life Design
WOL
Wake on LAN
Resettable Fuse
PC99 Back Panel
Socket370 CPU with Voltage and
Frequency Auto-detection
supports Intel
®
Pentium
®
III & Celeron™
300MHz~1GHz+ CPU
CPU Jumper-less Design
Over-current Protection
Thermal Protection
CPU Fan Connecto
r
System Voltage & Fan Monitoring
A
TX Power Connecto
r
A
C Power Auto Recovery
Housing Fan
WOM
Wake on Modem
Front Panel Connecto
r
168-pin DIMM Socket x3
su
pp
orts PC100/133 SDRAM u
p
to 1.5GB
A
TA/66 IDE Connector
Suspend to HDD
(
ATA/100 for o
p
tional
)
4X AGP Expansion Slot
JP12 Onboard Sound
AUX-IN
Modem-CN
JP23/JP29
FSB/PCI Clock Ratio
USB2 Connecto
r
PS/2 Mouse
Connecto
r
PS/2 Keyboard
Connecto
r
USB Port
SPP/EPP/ECP Parallel Port
COM 1 Port
COM 2 Port
MIDI/Game Port
MIC-In
Line-In
Speaker Out
Front Audio Connecto
r
CD-IN
FDD Connector
Buzzer
1. JP14 Clear CMOS
This motherboard has AC97 sound onboard. JP12 is used to enable or disable onboard AD1885
CODEC chip. If you select Disable, you can use your preferred PCI sound card.
2. JP12 Enable/Disable Onboard Audio
Everything you need to boot this
motherboard is included in this Easy
Installation Guide. For more
information, a complete Online User's
Manual can be found in the Bonus
Pack CD Disc. Thanks for the help of
saving our earth.
Tip: When should I Clear CMOS?
1. Boot fail because of overclocking…
2. Forget password…
3. Troubleshooting…
You can clear CMOS to restore system default setting. To clear
the CMOS, follow the procedure below.
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.
PART NO.: 49.88502.007 DOC. NO.: MX34-EG-E0103D
Disable Enable
1
2
3
1
2
3
Normal Operation
(default)
Clear CMOS
1
2
3
1
2
3
Hard Drive IDE Cable x 1
80-Wire IDE Cable x 1
Floppy Drive Cable x 1
Bonus Pack CD disc x 1
This Easy Installation Guide x 1
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking,
we suggest you do not change the default setting. But for overclocking, changing these
j
umper settings becomes necessary. For example, you must set JP29 to “5-6” and JP23 to
“3-4” if you want to overclock a 66MHz FSB clock CPU to 100MHz or higher.
3. Installing CPU and Fan 4. JP29/JP23 FSB/PCI Clock Ratio
Plug CPU to Socket370 connector. Be careful of
CPU orientation. Plug in the fan cable to the 3-pin
CPUFAN or FAN connector.
GND
+12V
SENSOR
Auto-Dectect CPU Core Voltage
This motherboard supports Celeron / Pentium III CPU VID function. The CPU
core voltage will be automatically detected and the range is from 1.3V to 3.5V.
Setting CPU Frequency
The CPU frequency selection is set by going into:
BIOS Setup > Chipset Features Setup > CPU Clock Ratio
CPU Ratio
1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, and 8x
CPU FSB
66.8, 75, 83.3, 100, 103, 105, 110, 112, 115, 120, 124, 133,
140, and 150 MHz.
Core Frequency = CPU FSB Clock * CPU Ratio
CPU CPU Core Frequency FSB Clock Ratio
CELERON 300A 300MHz 66MHz 4.5x
CELERON 600 600MHz 66MHz 9x
CELERON 700 700MHz 66MHz 10.5x
CELERON 800 800MHz 100MHz 8x
CELERON 850 850MHz 100MHz 8.5x
Pentium!!! 700E 700MHz 100MHZ 7x
Pentium!!! 750E 750MHz 100MHZ 7.5x
Pentium!!! 800E 800MHz 100MHZ 8x
Pentium!!! 850E 850MHz 100MHZ 8.5x
Pentium!!! 733EB 733MHz 133MHZ 5.5x
Pentium!!! 866EB 866MHz 133MHZ 6.5x
Pentium!!! 933EB 866MHz 133MHZ 7x
Pentium!!! 1G 1GHz 133MHZ 7.5x
Pentium!!! 1.13G 1.13GHz 133MHz 8.5
Note: Some CPU fans do not have
sensor pin, so that cannot support
fan monitoring.
Warning: VIA 694x chipset supports maximum 133MHz FSB and
66MHz AGP clock, higher clock setting may cause serious system
damage.
Home
Tip: If your system hangs or fails to boot
because of overclocking, simply use
<Home> key to restore the default setting
(233MHz).
Clock Ratio CPU (Host) PCI AGP Memory
2X 66 33 66 PCI x2 or x3
3X 100 33 66 PCI x2 or x3 or x4
3X, overclocking 112 37.3 74.6 PCI x2 or x3 or x4
4X 133 33 66 PCI x3 or x4
4X, overclocking 150 37.5 75 PCI x3 or x4
JP29 JP23
4X
(
133~150MHz
)
3X
(
100~124MHz
)
2X
(
66~83MHz
)
JP29 JP23
JP29 JP23
Auto
(
default
)
JP29 JP23
1
2
5
6
JP29
JP23
Tip: The driving capability of new generation
chipset is limited due to the lack of a memory buffer
(to improve performance). This makes DRAM chip
count an important factor to take into consideration
when you install DIMMs. Unfortunately, there is no
way that the BIOS can identify the correct chip
count, you need to calculate the chip count by
yourself. The simple rule is: By visual inspection,
use only DIMMs which are less than 18 chips..
6. Connecting IDE and Floppy Cable
Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE
connector. The blue connector is IDE1 for clear identification. Be careful of the pin1
orientation. Wrong orientation may cause system damage.
A
ttach 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.
5. Connecting Front Panel Cable
Locate the power switch cable from your AT
X
housing. It is 2-pin female connector from the housing
front panel. Plug this connector to the soft-powe
r
switch connector marked SPWR.
8. Connecting CD/Modem Audio
7. Configuring System Memory
This motherboard has three 168pin DIMM sockets
that allow you to install system memory up to
1.5GB. SDRAM, VCM SDRAM, Registered
SDRAM are supported.
DIMM1
DIMM2
DIMM3
Pin 1
The CD-IN connector is used to connect CD
A
udiocable from CDROM or DVD drive to
onboard sound.
The Modem-CN connector is used to connect
Mono In/ Mic Out cable from internal modem
card to onboard sound circuit.
The AUX-IN connector is used to connect
MPEG Audio cable from MPEG card to onboard
CD-IN
Pin 1
Slave (4th)
Master (1st)Slave (2nd)
Master (3rd)
FDC
Pin 1
IDE 2
IDE 1
SPWR
GND
ACPI & PWR LED
GND
+5V
NC
+5V
GND
RESET
GND
GND
KEYLOC
K
+5
V
IDE LED
IDE LED
+5
V
+5
V
GND
NC
SPEAKE
R
1
1
Speaker
IDE LED
Keylock
+
+
+
+
SPWR
+
+
ACPI &
Power LED
Reset
Connector Pin1 Pin2 Pin3 Pin4
CD-IN
Left GND GND Right
Modem-CN
Mono In GND GND Mic Out
AUX-IN
Left GND GND Right
Modem-CN
AUX-IN
9. Connecting ATX Power Connector
The ATX power supply uses 20-pin connector shown below. Make sure you plug in
the right direction.
10. Connecting IrDA Connector
The IrDA connector can be configured to support wireless infrared module, with this
module and application software such as Laplink or Windows 95 Direct Cable
Connection, the user can transfer files to or from laptops, notebooks, PDA devices and
printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).
Install the infrared module onto the IrDA connector and enable the infrared function
from BIOS Setup, UART mode select, make sure to have the correct orientation when
you plug in the IrDA connector.
+5V
NC
IRRX
GND
IRTX
NC
1
2
3
4
5
6
Pin 1
12. Front Audio
If the housing has been design with an audio port on the front panel, you’ll be able to
connect onboard audio to front panel through this connector. By the way, please
remove the jumper cap from the Front Audio Connector before you connect the cable.
Do not remove this yellow jumper cap if housing without an audio port on the front
panel.
Pin 1
+5V
+5V
+5V
+5V
+3.3V
+3.3V
+3.3V
COM
COM
COM
COM
COM
COM
-5V
COM
-12V
PS-ON
PW-OK
+12V
5VSB
MIC_IN2
VREFOUT
PHONE_R
NC
PHONE_L
GND
+5V
NC
NC
1 2
9 10
11. Support 2
nd
USB Port
This motherboard supports four USB ports. Two of them are on back panel connector,
the other two are on the left-bottom area of this motherboard. With proper cable, you
can connect them to front panel.
1 2
D3-
D3+
GND
NC
+5V
D2-
D2+
GND
NC
+5
V
9 10
A
fter you finish the setting of jumpers and connect correct cables. Powe
r
on and enter the BIOS Setup, press <Del> during POST (Power On Sel
f
Test). Choose "Load Setup Defaults" for recommended optimal
performance.
13. Power-on and Load BIOS Setup
14. AOpen Bonus Pack CD
16. BIOS Upgrade
A
Open Easy Flash is more use
r
-friendly than traditional flash method. The BIOS binary
file and flash routine are combined together and you simply run a single file to complete
the flash process.
1. Download new BIOS upgrade zipped file from AOpen's web site. For example,
MX34102.ZIP.
2. Run shareware PKUNZIP (http://www.pkware.com/) which supports
miscellaneous operation systems to extract the binary BIOS file and the flash
utility. Or Winzip (http://www.winzip.com/) in Windows environment.
3. Save the unzipped file into a bootable floppy disk.
For example, MX34102.BIN & MX34102.EXE
4. Reboot the system to DOS mode without loading any memory handler (such as
EMM386) or device driver. It needs around 520K free memory space.
5. Execute A:> MX34102 and the program will do the rest of it.
DO NOT turn off the power during FLASH PROCESS until you are asked to!!
6. Reboot system and press <Del> to enter BIOS Setup, Choose "Load Setup
Defaults", then “Save & Exit Setup” and finish the BIOS upgrade.
Warning: The upgrade of new BIOS will permanently replace your original BIOS
content after flashing. The original BIOS setting and Win95/Win98 PnP information
will be refreshed and you probably need to re-configure your system.
15. Installing Onboard Sound Driver
You can use the autorun menu of Bonus CD disc. Choose the utility and driver and
select model name.
Del
Warning: Please avoid of using
"Load Turbo Defaults", unless you are
sure your system components (CPU,
DRAM, HDD, etc.) are good enough
for turbo setting.
If this motherboard comes with an AD 1885 AC97 CODEC, you can find the audio
driver from the Bonus Pack CD disc autorun menu.
If you encounter any trouble to boot you system, follow the
procedures accordingly to resolve the problem.
Make sure if the jumper settings for CPU and DRAMs are correct.
Clear CMOS.
Install the VGA card. Then connect your monitor and keyboard.
Turn on the power, and check if the power supply and CPU
fan work properly.
Start
The problem was probably caused by
power supply or motherboard failure.
Please contact your reseller or local
distributor for repairing.
Check if there is display.
Perhaps your VGA card or monitor is
defective.
No
Yes
No
Yes
Press Ctrl, and Alt key at the same time, hold them and then
press Del to see if the system reboots.
No
It is very possible that your keyboard is
defective.
During system rebooting, press Del to enter BIOS Setup. Choose "Load
Setup Default".
Turn off the system and re-connect the IDE cable.Check
if the system can reboot successfully.
The problem should be caused by the
IDE cables or HDD itself.
Re-install Windows 95, Windows 98 or Windows NT.
Yes
Yes
End
No
Turn off the power and unplug the AC power cable, then remove all of
the addon cards and cables, including VGA, IDE, FDD, COM1, COM2
and Printer.
Part Number and Serial Number
The Part Number and Serial number are printed on bar code label. You can find this
bar code label on the outside packing, on ISA/CPU slot or on component side of PCB.
For example:
Model name and BIOS version
MX34 R1.00 Jan. 01. 2001 AOpen Inc.
A
ward Plug and Play BIOS Extension v1.0A
Copyright © 1998, Award Software, Inc.
Model name and BIOS version can be found on upper left corner of first boot screen
(POST screen). For example:
P/N: 91.88110.201 is part number, S/N: 91949378KN73 is serial number.
MX34 is model name of motherboard, R1.00 is BIOS version.
Part No.
Serial No.
Dear Customer,
Thanks for choosing AOpen products. To provide the best and fastest service to
our customer is our first priority. However, we receive numerous emails and
p
hone-calls worldwide everyday, it is very hard for us to serve everyone on time.
We recommend you follow the procedures below and seek help before contact
us. With your help, we can then continue to provide the best quality service to
more customers.
Thanks very much for your understanding!
A
Open Technical Supporting Team
Online Manual: Please check the manual carefully and make sure the
jumper settings and installation procedure are correct.
http://www.aopen.com.tw/tech/download/manual/default.htm
1
1
Test Report: We recommend to choose board/card/device from the
compatibility test reports for assembling your PC.
http://www.aopen.com.tw/tech/report/default.htm
2
2
FAQ: The latest FAQ (Frequently Asked Questions) may contain a
solution to your problem.
http://www.aopen.com.tw/tech/faq/default.htm
5
5
Download Software: Check out this table to get the latest updated
BIOS/utility and drivers.
http://www.aopen.com.tw/tech/download/default.htm
3
3
News Group: Your problem probably had been answered by our support
engineer or professional users on the news group.
http://www.aopen.com.tw/tech/newsgrp/default.htm
4
4
Contact Distributors/Resellers: We sell our products through resellers
and integrators. They should know your system configuration very well and
should be able to solve your problem more efficiently and important
reference for you if next time you want to buy something else from them.
6
6
Contact Us: Please prepare detail system configuration and error symptom
before contacting us. The part number, serial number and BIOS version
are also very helpful.
7
7
Web Site: www.aopen.com
E-mail: Send us email by going through the contact form below.
English http://www.aopen.com.tw/tech/contact/techusa.htm
Japanese http://aojp.aopen.com.tw/tech/contact/techjp.htm
Chinese http://w3.aopen.com.tw/tech/contact/techtw.htm
German http://www.aopencom.de/tech/contact/techde.htm
French http://aofr.aopen.com.tw/tech/contact/techfr.htm
Simplified Chinese http://www.aopen.com.cn/tech/contact/techcn.htm
Pacific Rim
A
Open Inc.
Tel: 886-2-2696-1333
Fax: 886-2-8691-2233
A
merica
A
Open America Inc.
Tel: 1-510-498-8928
Fax: 1-408-922-2935, 1-408-432-0496
Europe
A
Open Computer b.v.
Tel: 31-73-645-9516
Fax: 31-73-645-9604
Germany
A
Open Computer GmbH.
Tel: 49-2102-157700
Fax: 49-2102-157799
China
尔鹏国际 ( )
Tel: 49-2102-157700
Fax: 49-2102-157799
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AOpen MX33 Easy Installation Manual
- Type
- Easy Installation Manual
- This manual is also suitable for
AOpen MX33 is an ATX motherboard that supports Intel® Pentium® III and Celeron™ processors with speeds ranging from 300MHz to 1GHz. It features three 168-pin DIMM sockets for up to 1.5GB of SDRAM, and a 4X AGP expansion slot for high-speed graphics cards. The MX33 also includes onboard AC'97 sound, a PS/2 mouse and keyboard port, a parallel port, two serial ports, a game port, and four USB ports. Additionally, it has a built-in Wake on LAN (WoL) feature, allowing you to remotely power on the computer.
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