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
3
JP3 JP2 JP1
JP6
2.1 Jumper and Connector Locations
The following figure shows the locations of the jumpers and connectors on the
system board:
I
S
A
PANEL
I
S
A
IrDA
Jumpers:
I
S
A
JP14
HDD LED
COM2
P
P
P
P
P
C
I
5
C
I
4
BIOS
C
I
3
SPWR
FDC
C
C
I
I
1
2
USB
PRINTER KB MS
JP5
CPU SLOT 1
IDE1
IDE2
COM1
S IMM1
S IMM2
S IMM3
SIMM4
FAN
PWR2
JP1,JP2,JP3: CPU frequency ratio
JP5: CPU bus clock (chipset)
JP6: CPU bus clock (clock generator)
JP14: Clear CMOS
2-2
Hardware Installation
Connectors:
PS2 MS: PS/2 mouse connector
KB2: 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
FAN: CPU fan connector
IrDA: IrDA (Infrared) connector
HDD LED: HDD LED connector
PANEL: Front panel (Multifunction) connector
2-3
Hardware Installation
3
3
2.2 Jumpers
Jumpers are made by pin headers and plastic connecting caps for the
purpose of customizing your hardware. Doing so requires basic knowledge of
computer hardware, be sure you understand the meaning of the jumpers
before you change any setting. The onboard jumpers are normally set to their
default with optimized settings.
On the mainboard, normally there is a bold line marked beside pin 1 of the
jumper, sometimes, there are numbers also. If we connect (short) plastic cap
to pin 1 and 2, we will say set it at 1-2, and when we say jumper is open, that
means no plastic cap connected to jumper pins.
Open
1
2
Short
1
2
Jumper set at 1-
1
2
Jumper set at 2-3
1
2
2
2-4
Hardware Installation
2.2.1 Selecting the CPU Frequency
JP1
2-3
1-2
1-2
1-2
1-2
2-3
2-3
2-3
2-3
1-2
1-2
1-2
1-2
2-3
JP2
1-2
1-2
1-2
2-3
2-3
1-2
1-2
2-3
2-3
1-2
1-2
2-3
2-3
1-2
JP3
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2
CPU Frequency Ratio
1.5x
2x
2.5x
3x
3.5x
4x
4.5x
5x
5.5x
6x
6.5x
7x
7.5x
8x
Intel Pentium II (Klamath)
is designed to have
different Internal (Core) and
External (Bus) frequency.
The ratio of Core/Bus
frequency is selected by
JP1, JP2 and JP3, which
CPU is using to multiply
external clock and produce
internal frequency.
Core frequency = Ratio * External bus clock
JP3 & JP2 & JP1
1
2
3
3x
JP3 & JP2 & JP1
1
2
3
3.5x
JP6
1-2
2-3
JP5
1-2
2-3
CPU External Clock
66MHz (default)
60MHz
JP3 & JP2 & JP1
1
2
3
JP3 & JP2 & JP1
4x
JP6 and JP5 are selection of CPU
external clock (bus clock). JP6 is
actually the selection of clock from
clock generator and JP5 is used to
inform chipset the CPU bus clock.
4.5x
1
2
3
2-5
Hardware Installation
3
3
3
JP6
JP5
JP6 & JP5
1 2 3
66MHz
1
2
JP6 & JP5
1 2 3
60MHz
1
2
(default)
Caution: Following table are possible settings of
current CPU available on the market. The correct
setting may vary because of new CPU product,
refer to your CPU specification for more details.
INTEL
Pentium II
Klamath 200 200MHz = 3x 66MHz 1-2 & 2-3 & 1-2 1-2 & 1-2
Klamath 233 233MHz = 3.5x 66MHz 2-3 & 2-3 & 1-2 1-2 & 1-2
Klamath 266 266MHz = 4x 66MHz 1-2 & 1-2 & 2-3 1-2 & 1-2
CPU Core
Frequency
Ratio External
Bus Clock
JP3 & JP2 & JP1 JP6 & JP5
2.2.2 Setting the CPU Voltage
JP7~JP11
Open
CPU Core Voltage
CPU voltage autodetection (default)
JP7~JP11 is reserved for test only and
will be removed after mass production.
This mainboard supports Pentium II
(Klamath) VID function, the CPU core
voltage is automatic detected, the
range is from 1.3V to 3.5V.
JP11,JP10,JP9,JP8,JP7
1
2
Open for Auto-detection
2-6
2.2.3 Clearing the CMOS
3
3
Hardware Installation
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 listed below:
JP14
1
2
Normal Operation
JP14
1
2
Clear CMOS
(default)
The procedure to clear CMOS:
1. Turn off the system 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.
2-7
Hardware Installation
3.3V
3.3V
2.3 Connectors
2.3.1 Power Cable
The ATX power supply uses 20-pin connector shown below. Make sure you
plug in the right direction.
Caution: Make sure that the power supply is
off before connecting or disconnecting the
power cable.
5V SB
+5V
PWR2
+5V
2.3.2 ATX Soft-Power Switch Connector
The ATX soft-power switch connector is a 2-pin header on the system board.
Locate the power switch cable from your ATX housing. It is 2-pin female
connector from the housing front panel. Plug this connector to the soft-power
switch connector marked SPWR.
1
2
SPWR
2-8
Hardware Installation
PS/2 Mouse
2.3.3 CPU Fan
Plug in the fan cable to the two-pin fan connector onboard. The fan
connector is marked FAN on the system board.
GND
+12V
SENSE
FAN
2.3.4 PS/2 Mouse
The onboard PS/2 mouse connector is a 6-pin Mini-Din connector marked PS2
MS. The view angle of drawing shown here is from back panel of the housing.
PCB
2.3.5 Keyboard
The onboard PS/2 keyboard connector is a 6-pin Mini-Din connector marked
KB2. The view angle of drawing shown here is from back panel of the housing.
2-9
Hardware Installation
COM2
PRINTER
PS/2 KB
2.3.6 Serial Devices (COM1/COM2)
The onboard serial connectors are 9-pin D-type connector on the back panel
of mainboard. The serial port 1 connector is marked as COM1 and the serial
port 2 connector is marked as COM2.
PCB
COM1
PCB
COM1
COM2
2.3.7 Printer
The onboard printer connector is a 25-pin D-type connector marked PRINTER.
The view angle of drawing shown here is from back panel of the housing.
PCB
2-10
2.3.8 USB Device
34
33
You need a USB bracket to
have your system to support
additional USB device(s). To
attach a USB bracket, simply
insert the bracket cable to the
onboard USB connector marked
as USB.
Pin
1
3
5
7
9
Hardware Installation
Description
V0
D0D0+
GND
NC
Pin
2
4
6
8
10
Description
V1
D1D1+
GND
NC
1
2
9 10
USB
2.3.9 Floppy Drive
Connect the 34-pin floppy drive cable to the floppy drive connector marked as
FDC on the system board.
2
1
FDC
2-11
Hardware Installation
1
40
2
39
1
40
2
39
2.3.10 IDE Hard Disk and CD ROM
This mainboard supports two 40 pin IDE connectors marked as
IDE1 and IDE2. IDE1 is also known as primary channel and
IDE2 as secondary channel, each channel supports two IDE
devices that makes total of four devices.
In order to work together, the two devices on each channel
must be set differently to master and slave mode, either one
can be hard disk or CDROM. The setting as master or slave
mode depends on the jumper on your IDE device, please refer
to your hard disk and CDROM manual accordingly.
Connect your first IDE hard disk to master mode of the primary
channel. If you have second IDE device to install in your
system, connect it as slave mode on the same channel, and
the third and fourth device can be connected on secondary
channel as master and slave mode respectively.
IDE1
2-12
IDE2
Caution: The specification of IDE cable is
maximum 46cm (18 inches), make sure your
cable does not excess this length.
Caution: For better signal quality, it is
recommended to set far end side device to
master mode and follow the suggested
sequence to install your new device . Please
refer to following figure.
Hardware Installation
(1st)
(2nd)
+ - - +
+ - - +
+ - - +
IDE1 (Primary Channel)
IDE2 (Secondary Channel)
Slave
(4th)
2.3.11 Hard Disk LED
The HDD LED connector is marked as HDD
LED on the board. This connector is designed
for different type of housing, actually only two
pins are necessary for the LED. If your
housing has four pin connector, simply plug it
in. If you have only two pin connector, please
connect to pin 1-2 or pin 3-4 according to the
polarity.
1 2 3 4
Slave
Pin
1
2
3
4
1 2 3 4
Master
Master
(3rd)
Description
HDD LED
GND
GND
HDD LED
1 2 3 4
HDD LED
4-pin connector
HDD LED
2-pin connector
at pin 1-2
HDD LED
2-pin connector
at pin 3-4
2-13
Hardware Installation
1
111020
+++++
+
10
20
2.3.12 Panel Connector
The Panel (multifunction) connector is a 20pin connector marked as PANEL on the
board. Attach the power LED, keylock,
speaker, reset switch, suspend switch, and
green mode LED connectors to the
corresponding pins as shown in the figure.
Some housings have a five-pin connector
for the keylock and power LED Since power
LED and keylock are aligned together, you
can still use this kind of connector.
Keylock
Power LED
Speaker
GND
KEYLOCK
GND
RESET
POWER LED
SPEAKER
+5V
GND
NC
SPEAKER
PANEL
1
11
10 20
PANEL
Green LED
Suspend SW
Reset
+5V
GND
GREEN LED
GND
SUSPEND SW
SUSPEND SW
GND
NC
RESET
GND
Other housings may have a 12-pin
connector. If your housing has this
type of connector, connect it to
PANEL as shown in the figure.
Make sure that the red wire of the
connector is connected to +5V.
2-14
1
11
PANEL
+5V
Hardware Installation
Note: If your housing comes with Turbo switch and
Turbo LED connectors, you may use these connectors
for Suspend switch and Green mode LED functions,
respectively.
Note: Pressing the Suspend switch allows you to
manually force the system to suspend mode.
However, this is possible only if the Power Management
function in the BIOS Setup menu is enabled.
2.3.13 IrDA Connector
The IrDA connector can be configured to support wireless infrared
module, with this module and application software such as Laplink or
Win95 Direct Cable Connection, user can transfer files to or from laptops,
notebooks, PDA and printers. This connector supports HPSIR
(115.2Kbps, 2 meters), ASK-IR (19.2Kbps) and Fast IR (4Mbps, 2
meters).
Install infrared module onto IrDA
connector and enable infrared function
from BIOS setup, make sure to have
correct orientation when you plug onto
IrDA connector.
IrDA
Pin
1
2
3
4
5
6
Description
+5V
FIRRX
IRRX
GND
IRTX
NC
1
2
3
4
5
6
2-15
Hardware Installation
2.4 Configuring the System Memory
Pin1 of
Bank0
Pin1 of
Bank1
The SIMM supported by this mainboard can be identified by 4 kinds of factors:
♦ Size: single side, 1Mx32 (4MB), 4Mx32 (16MB), 16Mx32 (64MB), and
double side, 1Mx32x2 (8MB), 4Mx32x2 (32MB), 16Mx32x2 (128MB).
♦ Speed: 60ns or 70ns access time
♦ Type: FPM (Fast page mode) or EDO (Extended data output)
♦ Parity: without parity (32 bit wide) or with parity (36 bit wide).
Because Pentium II processor has 64 bit bus width, the four SIMM sockets
are arranged in two banks of two sockets each, they are Bank0 and Bank1.
Both SIMMs in each bank must be in the same size and type. It is allowed to
have different speed and type in different bank, for example, 70ns FPM in one
bank and 60ns EDO in another bank, in such case, each bank is
independently optimized for maximum performance. The memory timing
requires at least 70ns fast page mode DRAM chip, but for optimum
performance, 60ns EDO DRAM is recommended.
This mainboard has four 72 pin SIMM
sockets (Single-in-line Memory Module) that
allow you to install system memory from
minimum 4MB up to maximum 512MB.
2-16
Warning: The default memory timing setting is 60ns to
obtain the optimal performance. Because of the
specification limitation, 70ns SIMM is recommended to
be used only for CPU external clock 60MHz.
Tip: EDO DRAM is designed to improve the DRAM read
performance. Unlike traditional fast page mode, that tristates the memory output data to start the precharge
activity, EDO DRAM holds the memory data valid until
the next memory access cycle, which is similar to pipeline effect and reduces one clock state.
Hardware Installation
There is no jumper setting required for the memory size or type. It is
automatically detected by the system BIOS. You can use any single side
SIMM combination list below for, and the total memory size is to add them
together, the maximum is 512MB.
SIMM1 SIMM2 Subtotal of Bank0
None None 0MB
4MB 4MB 8MB
8MB 8MB 16MB
16MB 16MB 32MB
32MB 32MB 64MB
64MB 64MB 128MB
128MB 128MB 256MB
SIMM3 SIMM4 Subtotal of Bank1
None None 0MB
4MB 4MB 8MB
8MB 8MB 16MB
16MB 16MB 32MB
32MB 32MB 64MB
64MB 64MB 128MB
128MB 128MB 256MB
Total Memory Size = Subtotal of Bank0 + Subtotal of Bank1
Caution: Make sure that you install the same SIMM
type and size for each bank.
The driving capability of new generation chipset is limited because the lack of
memory buffer (to improve performance). This makes DRAM chip count an
important factor to be taking into consideration when you install SIMM.
Unfortunately, there is no way that BIOS can identified the correct chip count,
you need to calculate the chip count by yourself. The simple rule is: By visual
inspection, use only SIMM with chip count less than 24 chips.
2-17
Hardware Installation
Warning: Do not install any SIMM that contains more
than 24 chips. SIMMs contain more than 24 chips
exceed the chipset driving specification. Doing so may
result in unstable system behavior.
Tip: The SIMM chip count can be calculated by following
example:
1. For 32 bit non-parity SIMM using 1M by 4 bit DRAM
chip, 32/4=8 chips.
2. For 36 bit parity SIMM using 1M by 4 bit DRAM
chip, 36/4=9 chips.
3. For 36 bit parity SIMM using 1M by 4 bit and 1M by
1 bit DRAM, the chip count will be 8 data chips(8=
32/4) plus 4 parity chips(4=4/1), total is 12 chips.
Following table list the recommended DRAM combinations:
SIMM
Data chip
1M by 4 None 1Mx32 x1 8 4MB Yes
1M by 4 None 1Mx32 x2 16 8MB Yes
1M by 4 1M by 1 1Mx36 x1 12 4MB Yes
1M by 4 1M by 4 1Mx36 x1 9 4MB Yes
1M by 4 1M by 4 1Mx36 x2 18 8MB Yes
1M by 16 None 1Mx32 x1 2 4MB Yes
1M by 16 None 1Mx32 x2 4 8MB Yes
1M by 16 1M by 4 1Mx36 x1 3 4MB Yes
1M by 16 1M by 4 1Mx36 x2 6 8MB Yes
4M by 4 None 4Mx32 x1 8 16MB Yes
4M by 4 None 4Mx32 x2 16 32MB Yes
4M by 4 4M by 1 4Mx36 x1 12 16MB Yes
4M by 4 4M by 1 4Mx36 x2 24 32MB Yes
SIMM
Parity chip
Bit size
per side
Single/
Double
side
Chip
count
SIMM
size
Recommended
2-18
Hardware Installation
SIMM
Data chip
16M by 4 None 16Mx32 x1 8 64MB Yes, but not tested.
16M by 4 None 16Mx32 x2 16 128MB Yes, but not tested.
16M by 4 16M by 4 16Mx36 x1 9 64MB Yes, but not tested.
16M by 4 16M by 4 16Mx36 x2 18 128MB Yes, but not tested.
SIMM
Parity chip
Bit size
per side
Single/
Double
side
Chip
count
SIMM
size
Recommended
Warning: 64MB SIMMs using 16M by 4 bit chip (64M bit
technology) are not available in the market and are not
formally tested by AOpen quality test department yet.
However they are supported by design specification of
chipset and they will be tested as soon as they are
available. Note that 64MB SIMMs using 16M by 1 bit
chip (16M bit technology) have chip count exceed 24
and are strongly not recommended.
Tip: 8 bit = 1 byte, 32 bit = 4 byte. The SIMM size is
represented by number of data byte (whether with or
without parity), for example, the size of single side SIMM
using 1M by 4 bit chip is 1Mx32 bit, that is, 1M x 4 byte
= 4MB. For double side SIMM, simply multiply it by 2,
that is, 8MB.
Following table are possible DRAM combinations that is NOT recommended:
SIMM
Data chip
1M by 1 None 1Mx32 x1 32 4MB No
1M by 1 1M by 1 1Mx36 x1 36 4MB No
1M by 4 1M by 1 1Mx36 x2 24 8MB No
4M by 1 None 4Mx32 x1 32 16MB No
4M by 1 4M by 1 4Mx36 x1 36 16MB No
16M by 1 None 16Mx32 x1 32 64MB No
16M by 1 16M by 1 16Mx36 x1 36 64MB No
SIMM
Parity chip
Bit size
per side
Single/
Double
side
Chip
count
SIMM
size
Recommended
2-19
Hardware Installation
Memory error checking is supported by two modes, parity check or ECC
(Error Check and Correction). To use memory error check you need 36 bit
SIMM (32 bit data + 4 bit parity or ECC bit). 36 bit parity or ECC SIMMs are
automatically detected by BIOS, however you must enter BIOS setup to
configure the memory for either parity or ECC mode.
Tip: The parity mode uses 1 parity bit for each byte,
normally it is even parity mode, that is, each time the
memory data is updated, parity bit will be adjusted to
have even count "1" for each byte. When next time, if
memory is read with old number of "1", the parity error
is occurred and this is called single bit error detection.
Tip: The ECC mode needs 8 ECC bit for 64 bit data,
because 36 bit SIMM has 4 bit more for parity, the ECC
mode can be supported by two traditional parity SIMMs,
it is no need to have special ECC SIMM. Each time
memory is accessed, ECC bits are updated and
checked by special algorithm, the ECC algorithm has the
ability to detect double bit error and automatically
correct single bit error.
2-20
Hardware Installation
2.5 PCI Slot
PCI Slot 4 and Slot 5 share the
same interrupt INTD.
Each PCI slot has four PCI interrupts aligned as listed in the table below. Most
of the PCI cards use only one interrupt at location 1 (pin A6), because the
chipset supports only 4 PCI interrupts. PCI slot 4 and PCI slot 5 share the
same interrupt INTD.
Tip: Since normally PCI VGA does not use interrupt, you
may plug VGA card at either slot 4 or slot 5, and the
other slot can be used for another PCI card.
PCI Slot Location 1
(pin A6)
Slot 1 INTA INTB INTC INTD
Slot 2 INTB INTC INTD INTA
Slot 3 INTC INTD INTA INTB
Slot 4 INTD INTA INTB INTC
Slot 5 INTD INTA INTB INTC
Note: The onboard USB ports share PCI INTD too. If
you enable "USB Host Controller" in BIOS setup, INTD
will be occupied by USB port. That is, PCI slot 4 and slot
5 can only use PCI card that does not need interrupt,
such as VGA.
Location 2
(pin B7)
Location 3
(pin A7)
Location 4
(pin B8)
2-21
Hardware Installation
2.6 CPU Thermal Protection
This mainboard implements special thermal protection circuit under the CPU
heatsink. When temperature is higher than 55 degree C, the CPU speed will
automatically slow down and there will be warning from BIOS and also ADM
(AOpen Desktop Manager, similar as Intel LDCM), if ADM is installed.
It is automatically implemented by BIOS and ADM, no hardware installation is
needed.
2-22
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