AOpen DX34-U User manual

Low ESR Capacitor
Dual CPU Sockets
P1_FAN & P2_FAN Connector
VIAApollo Pro 133T Chipset
AGP Pro Power Connector
SSI ATX Power Connector
PC-133 DIMM Slot x 3
Redundant SPS Connector
Front Panel Connector
BP (Back panel) Connector
Intel 82559 10/100
LAN Controlle
r
A
GP Pro Slo
t
32 Bit PCI Slot x 5
4Mbit Flash BIOS
SCSI Card HDD LED Connecto
r
(DX34 Plus-U only)
A
daptec Ultra3 SCSI Controlle
r
(DX34 Plus-U only)
S2_FAN Connecto
r
A
TA/100 IDE Connecto
r
Dual Channel Ultra3 SCSI
Connector (DX34 Plus-U only)
CPU #1 CPU #2
WOL Connecto
r
(Wake On LAN)
PS/2 Mouse
Connector SPP/EPP/ECP Parallel Port
RJ45 10/100
LAN Jack
(Optional)
PS/2 Keyboard
Connector USB Port COM 1 Port
Speaker Out (DX34-U only)
Line-In MIC-In
(DX34-U only)
S1_FAN Connecto
r

1.Installing Processor
2. Installing CPU & Housing Fan
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!
PART NO: 90.50F30.007 DOC. NO: DX34PU-EG-E0112C
Hard Drive IDE Cable x 1
80-Wire IDE Cable x 1
Floppy Drive Cable x 1
Ultra 160 SCSI 68 pin Cable x 1 (DX34 Plus-U only)
Bonus Pack CD disc x 1
User Manual x 1
This Easy Installation Guide x 1
I/O Bracket x 1
ASM Lite x 1
Plug in the CPU fan cable to the 3-pin CPU FAN (P1_FAN & P2_FAN) connector and housing fan cable to
the System Fan (S1_FAN & S2_FAN) connector.
1. Pull up the CPU socket lever and up to
90-degree angle.
2. Locate Pin 1 in the socket and look for a
(golden) cut edge on the CPU upper interface.
Match Pin 1 and cut edge. Then insert the
CPU into the socket.
3. Press down the CPU socket lever and finish
CPU installation.
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well,
it may damage the CPU.
CPU fan connector
(P1_FAN & P2_FAN)
System fan connector
(S1_FAN)
GND
+12V
Sensor
Senso
r
+12
V
GND
GND
+12V
Sensor
System fan connector (S2_FAN)
CPU socket lever
CPU Pin 1 and cut edge

The DX34-U / DX34 Plus-U supports Intel®Socket 370 Celecron™ and Pentium III series
CPU. Including the code name Tualatin 512K cache CPU for dual CPU configuration.
Processor Name CPU Package
Single Processor Pentium !!!
Celeron
All
FCPGA
Dual Processor Pentium !!!
Pentium !!! 512K
Coppermine
Tualatin
CPU CPU Core Frequency FSB Clock Ratio
Pentium III 600E 600MHz 100MHz 6x
Pentium III 650E 650MHz 100MHz 6.5x
Pentium III 700E 700MHz 100MHz 7x
Pentium III 750E 750MHz 100MHz 7.5
Pentium III 800E 800MHz 100MHz 8x
Pentium III 850E 850MHz 100MHz 8.5x
Pentium III 533EB 533MHz 133MHz 4x
Pentium III 600EB 600MHz 133MHz 4.5x
Pentium III 667EB 667MHz 133MHz 5x
Pentium III 733EB 733MHz 133MHz 5.5
Pentium III 800EB 800MHz 133MHz 6x
Pentium III 866EB 866MHz 133MHz 6.5
Pentium III 933EB 933MHz 133MHz 7x
Pentium III 1G 1GHz 133MHz 7.5x
Pentium III 1.13G 1.13GHz 133MHz 8.5x
Pentium III 1.26G 1.26GHz 133MHz 9x
5. Setting CPU Voltage & Frequency
4. Supported CPU Type
You can clear CMOS to restore system default setting.
To clear the CMOS, follow the procedure below.
1. Turn off the system and unplug theAC 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
& pin2.
5. Connect ATX power cable back to connector PWR2.
3. JP14 Clear CMOS
Normal Operation
(default) Clear CMOS
1
1
Setting CPU Core Voltage
This motherboard supports CPU VID function. The CPU core voltage will be automatically
detected and the range is from 1.05V to 1.825V. It is not necessary to set CPU Core Voltage
Setting CPU Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS
setup, no jumpers or switches are needed.
BIOS Setup > Frequency / Voltage Control > CPU Speed Setup
Core Frequency = CPU FSB Clock * CPU Ratio
CPU Ratio 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, 8x, 8.5x, 9x, 9.5x, 10x, 10.5x, 11x, 11.5x,
12x, 12.5x, 13x, 13.5x, 14x, 14.5x, 15x, 15.5x and 16x
CPU FSB
(By BIOS Table)
100 and 133 MHz
Warning: We strongly
recommend you do not
overclocking your CPU
and system for get more
system reliability.

Present 3
7. Connecting ATX and AGP Pro Power Connector
6. Install DIMM Modules 8. Redundant SPS Monitoring Connector
9. Connecting IDE & FDD Cable
This motherboard has three 168-pin DIMM sockets that allow you to install PC100 o
r
PC133 memory up to 3GB. The DX34-U / DX34 Plus-U supports not only SDRAM but
also ECC or Re
g
istered DRAM.
The DX34-U / DX34 Plus-U uses standard ATX power connector. The 6-pin AGP Pro
Power connector provides extra +5V and +3.3V power for AGP Pro VGA card. Make sure
you plug in the right direction.
This motherboard implements Redundant SPS monitoring connector to provide hardware
monitoring signals. It is feasible to install an additional 337-watt power supply module
(optional with AOpen Server Housing) in a hot swappable configuration. If any SPS failed,
a signal will be sent to a hardware monitoring device.
Connect 34-pin floppy cable and 40-pin ATA100 or ATA33 IDE cable to floppy connecto
r
FDC and IDE connector IDE1, IDE2. Pin1 of cable is normally marked with red color. Be
careful of the pin1 orientation. Wrong orientation may cause system damage.
DIMM 3
DIMM 2
DIMM 1
Standard ATX Power
Connecto
r
AGP Pro Power
1
214
13
PS 1 Fail
I2C CLK
Present 1
Fan 3 Fail Fan 1 Fail
PS 2 Fail
PS_ON
PS 3 Fail
Fan 2 Fail
Present 2
5VSB
GND
IDE2 (Secondary)
IDE1 (Primary)
Primary
Master
(
1st
)
Primary
Slave (2nd)
Secondary
Slave (4th)
Secondary
Master (3rd)
FDD
Connector
ATA/100 IDE
Connector
Pin 1
+5V
+5V
COM
-5V
COM
+5V
+3.3V
+3.3V
COM
COM
COM
PS-ON
-12V
COM
+3.3V
5VSB
+5V
COM
+3.3
V
GND
I2CDA

This feature is very similar as Wake On Modem, but it goes through local area network.
To use Wake On LAN function, you must have a network card with chipset that supports
this feature, and connect a cable from LAN card to motherboard WOL connector.
12. Connecting SCSI Card LED Connector (DX34 Plus-U only)
10. Connecting 68-pin Ultra3 SCSI Cable (DX34 Plus-U only)
The DX34Plus-U provides two 68-pin Ultra Wide/Ultra 2/3 SCSI connectors for 16-bit o
r
16-bit differential SCSI devices.
11. Connecting Front Panel Connector
A
ttaching such as power LED, speaker, reset switch, power switch connector, etc.… to
corresponding pins.
The 4-pin SCSI LED connector can be connected to a PCI SCSI control card activit
y
LED connector. Read or write activity by devices connected to the SCSI card will make
the LED lighting up.
68-pin SCSI Ultra3 Connectors
-
+
+
-
-
+
+
-
CN23
CN24
ATX
Power Switch Power LED
Reset SwitchHDD LED
Chassis
Intrusion Switch
1
2
21
22
+5VSB
GND
HDD LED
GND
+5V
+5V
PWR LED
HDD LED
+5V
INT S/W
RST S/W
GND
GND
1
2
21
22
13. Wake On LAN
+5VSB
GND
LID