Foxconn G31MV-K User Manual

G31MV Series

Motherboard

User’s Manual

Statement:

This manual is the intellectual property of Foxconn, Inc. Although the information

in this manual may be changed or modied at any time, Foxconn does not obligate

itself to inform the user of these changes.

Trademark:

All trademarks are the property of their respective owners.

Version:

User’s Manual V1.0 for G31MV Series motherboard.

P/N: 3A220SY00-000-G

Symbol description:

Caution : refers to important information that can help you to use motherboard

better, and tells you how to avoid problems.

Warning : indicating a potential risk of hardware damage or physical injury may

exist.

WEEE:

The use of this symbol indicates that this product may not be treated as household

waste. By ensuring this product is disposed of correctly, you will help prevent potential

negative consequences for the environment and human health, which could otherwise

be caused by inappropriate waste handling of this product. For more detailed

information about recycling of this product, please contact your local city ofce, your

household waste disposal service or the shop where you purchased this product.

More information:

If you want more information about our products, please visit Foxconn’s website:

http://www.foxconnchannel.com

All trade names are registered trademarks of respective manufacturers listed.

All images are for reference only, please refer to the physical motherboard for specic features.

Declaration of conformity

HON HAI PRECISION INDUSTRY COMPANY LTD

66 , CHUNG SHAN RD., TU-CHENG INDUSTRIAL DISTRICT,

TAIPEI HSIEN, TAIWAN, R.O.C.

declares that the product

Motherboard G31MV/G31MV-K

is in conformity with

(reference to the specication under which conformity is declared in

accordance with 89/336 EEC-EMC Directive)

■ EN 55022:1998/A2: 2003 Limits and methods of measurements of radio

disturbance characteristics of information technology equipment

■ EN 61000-3-2/:2000

Electromagnetic compatibility (EMC)

Part 3: Limits Section 2: Limits for harmonic current emissions (equipment input current <= 16A per phase)

■ EN 61000-3-3/A1:2001

Electromagnetic compatibility (EMC)

Part 3: Limits

Section 2: Limits of voltage uctuations and icker in low

voltage supply systems for equipment with rated current <= 16A

■ EN 55024/A2:2003 Information technology equipment-Immunity

characteristics limits and methods of measurement

Signature :

Place / Date : TAIPEI/2008

Printed Name : James Liang

Declaration of conformity

Trade Name: FOXCONN

Model Name: G31MV/G31MV-K

Responsible Party: PCE Industry Inc.

Address: 458 E. Lambert Rd.

Fullerton, CA 92835

Telephone: 714-738-8868

Facsimile: 714-738-8838

Equipment Classication: FCC Class B Subassembly

Type of Product: Motherboard

Manufacturer: HON HAI PRECISION INDUSTRY

COMPANY LTD

Address: 66 , CHUNG SHAN RD., TU-CHENG

INDUSTRIAL DISTRICT, TAIPEI HSIEN,

TAIWAN, R.O.C.

Supplementary Information:

This device complies with Part 15 of the FCC Rules. Operation is subject to the following

two conditions : (1) this device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation.

Tested to comply with FCC standards.

Signature : Date : 2008

Installation Precautions

Please carefully read the following procedures to install your computer :

■ It is suggested to select high-quality, certied fans in order to avoid damage

to the motherboard and CPU due to high temperature. Never turn on the

computer if the CPU fan is not properly installed.

■ We cannot guarantee that your system can operate normally when your

CPU/Memory is overclocked. Normal operation depends on the overclocking

capacity of your device.

■ If there is any, when connecting USB, audio, 1394a, RS232 COM, IrDA or

S/PDIF cables to the internal connectors on the motherboard, make sure

their pinouts are matching with the connectors on the motherboard. Incorrect

connections might damage the motherboard.

■ When handling the motherboard, avoid touching any metal leads or connec-

tors.

■ If there is a PCI Express x16 graphics card installed in your system, we

recommend using a 24-pin ATX power supply to get the best performance.

■ Before turning on the power, please make sure the power supply AC input

voltage setting has been congured to the local standard.

■ To prevent damage to the motherboard, do not allow screws to come in contact

with the motherboard circuit or its components. Also, make sure there are no

leftover screws or metal components placed on the motherboard or within the

computer casing.

■ If you are uncertain about any installation steps or have a problem related to

the use of the product, please consult a certied computer technician.

■ Electrostatic discharge (ESD) is the sudden and momentary electric current

that ows between two objects at different electrical potentials. Normally it

comes out as a spark which will quickly damage your electronic equipment.

Please wear an electrostatic discharge (ESD) wrist strap when handling

components such as a motherboard, CPU or memory.

■ Ensure that the DC power supply is turned off before installing or removing

CPU, memory, expansion cards or other peripherals. It is recommended to

unplug the AC power cord from the power supply outlet. Failure to unplug

the power supply cord may result in serious damage to your system.

TABLE OF CONTENTS

Chapter 1 Product Introduction

Product Specications ..................................................................

Layout ........................................................................................... 4

Back Panel Connectors ................................................................

Chapter 2 Hardware Install

Install the CPU and CPU Cooler ..................................................8

Install the Memory ...................................................................... 11

Install an Expansion Card .......................................................... 13

Install other Internal Connectors ................................................ 14

Jumpers ......................................................................................17

Chapter 3 BIOS Setup

Enter BIOS Setup ....................................................................... 20

Main Menu ..................................................................................20

System Information .................................................................... 22

Fox Central Control Unit ............................................................. 24

Advanced BIOS Features ........................................................... 31

Advanced Chipset Features .......................................................33

Integrated Peripherals ................................................................

Power Management Setup ......................................................... 40

PC Health Status ........................................................................ 43

Load Optimized Defaults ............................................................45

Set Supervisor Password ...........................................................45

Set User Password .....................................................................45

Save & Exit Setup ...................................................................... 45

Exit Without Saving ....................................................................45

Chapter 4 CD Instruction

Utility CD content ........................................................................47

Install driver and utility ................................................................ 48

FOX ONE

Main Page ............................................................................. 50

CPU Control .......................................................................... 54

Frequency Control ................................................................56

Limit Setting ..........................................................................57

Voltage Control .....................................................................59

Fan Control ...........................................................................

FOX LiveUpdate

Local Update .........................................................................

Online Update ....................................................................... 63

Congure .............................................................................66

About & Help .........................................................................

FOX LOGO .................................................................................69

FOX DMI .................................................................................... 70

Technical Support :

Website :

http://www.foxconnchannel.com

Support Website :

http://www.foxconnchannel.com/support/online.aspx or http://www.foxconnsupport.com

Worldwide E-mail Support :

pcebg-cisg-support@foxconn.com

CPU, Memory, VGA Compatibility Supporting Website :

http://www.foxconnchannel.com/product/Motherboards/compatibility.aspx

Support

Thank you for buying Foxconn G31MV Series motherboard. Foxconn

products are engineered to maximize computing power, providing only

what you need for break-through performance.

With advanced overclocking capability and a range of connectivity

features for today multi-media computing requirements, G31MV/

G31MV-K enables you to unleash more power from your computer.

This chapter includes the following information:

■ Product Specications

■ Layout

■ Back Panel Connectors

1-1 Product Specications

CPU Support LGA775 socket Intel® CPU:

CoreTM 2 Duo / Pentium® Dual-Core / Celeron® processors

Future-proof supporting for 45nm processors

Front Side Bus 1333/1066/800MHz FSB

Chipset North Bridge : Intel® G31 Chipset

South Bridge : Intel® ICH7

Memory 2 x 240-pin DDR2 DIMM sockets

Support up to 4GB of system memory

Dual channel DDR2 800/667MHz architecture

Audio Realtek 6-channel audio chip

High Denition Audio

2/4/5.1-channel

Support Jack-Sensing function

LAN Realtek 10/100Mb/s LAN chip (G31MV)

Realtek Gigabit LAN chip (G31MV-K)

Expansion Slots 1 x PCI Express x16 slot

1 x PCI slot

Onboard Serial ATA 2 x SATA connectors

300MB/s data transfer rate

Support hot plug and NCQ (Native Command Queuing )

USB Support hot plug

Support up to 8 x USB 2.0 ports (4 rear panel ports, 2 onboard USB

headers supporting 4 extra ports)

Support USB 2.0 protocol up to 480Mb/s

Internal Connectors 1 x 24-pin ATX main power connector

1 x 4-pin ATX 12V power connector

1 x Floppy disk drive connector

1 x IDE connector

2 x SATA connectors

2 x USB 2.0 connectors (supporting 4 x USB devices)

1 x CPU fan header (4-pin)

1 x System fan connector (4-pin)

1 x Front Panel connector

1 x CD_IN connector

1 x Speaker connector

1 x Front Audio connector

1 x IrDA connector

1 x Chassis Intrusion alarm header (INTR)

Back Panel 1 x PS/2 keyboard port

Connectors 1 x PS/2 mouse port

1 x Serial Port

4 x USB 2.0 ports

1 x RJ-45 LAN port

1 x VGA port

6-channel Audio ports

Hardware Monitor System voltage detection

CPU/System temperature detection

CPU/System fan speed detection

CPU/System overheating warning

CPU/System fan speed control

PCI Express x16 Support 4GB/s (8GB/s concurrent) bandwidth

Low power consumption and power management features

Green Function Support ACPI (Advanced Conguration and Power Interface)

Support S0 (normal), S1 (power on suspend), S3 (suspend to RAM), S4

(suspend to disk), and S5 (soft - off)

Bundled Software FOX ONE

FOX LiveUpdate

FOX LOGO

FOX DMI

Operating System Support for Microsoft® Windows® Vista/XP/2000

Form Factor Micro ATX Form Factor, 9.6 inches x 7.2 inches (24.4cm x 18.3cm)

1-2 Layout

Note : The above motherboard layout is for reference only, please refer to the physical

motherboard for detail.

1. 4-pin ATX 12V Power Connector

2. USBPWR2 Jumper

3. SYS_FAN Header

4. CD_IN Connector

5. IrDA Connector

6. PCI Express x16 Slot

7. Front USB Connectors

8. USBPWR1 Jumper

9. PCI Slot

10.Front Audio Connector

11. Floppy Connector

12. South Bridge: Intel® ICH7

13. Speaker Connector

14. Front Panel Connector

15. SATA Connectors

16. Clear CMOS Jumper

17. Chassis Intrusion Alarm Header

18. IDE Connector

19. 24-pin ATX Power Connector

20. DDR2 DIMM Slots

21. CPU_FAN Header

22. North Bridge: Intel® G31 chipset

23. LGA 775 CPU Socket

1715

1-3 Back Panel Connectors

1. PS/2 Mouse Port

Use the upper port (green) to connect a PS/2 mouse.

2. PS/2 Keyboard Port

Use the lower port (purple) to connect a PS/2 keyboard.

3. Serial Port

This is output of RS232 COM1 port.

4. VGA Port

To connect with external display devices, such as monitor or LCD display.

5. USB Ports

The USB port supports the USB 2.0/1.1 specication. Use this port for USB devices such as an

USB keyboard/mouse, USB printer, USB ash drive and etc.

6. Audio Ports

For the denition of each audio port, please refer to the table below :

* : Please refer to Chapter 4, and run the Realtek audio driver (in CD) to assign the audio output

ports for different applications of 2/4/5.1 channels. The fundamental audio outputs are depicted

in the table above.

Port 2-channel 4-channel 5.1-channel

Blue Line In Rear Speaker Out* Rear Speaker Out*

Green Line Out Front Speaker Out Front Speaker Out

Pink Microphone In Microphone In Center/Subwoofer Out*

VGA Port USB Ports

LAN Port

PS/2 Keyboard Port

PS/2 Mouse Port

Line Out

Microphone

Line In

5 6

Serial Port Audio Ports

7. RJ-45 LAN Port

The Ethernet LAN port provides Internet connection at up to 10/100/1000Mb/s data rate.

G31MV supports 10/100Mb/s Ethernet.

G31MV-K supports 1Gb/s Ethernet.

LAN Type

Left: Active Right: Link

Status Description Status Description

100M

Off No Link Off No Link

Green

Blinking

Data Activity Orange 10/100Mb/s Connection

1000M

Off No Link Off No Link

Green

Blinking

Data Activity

Off 10Mb/s Connection

Green 100Mb/s Connection

Orange 1000Mb/s Connection

Active

LED

Link

LED

This chapter introduces the hardware installation process, including

the installation of the CPU, memory, power supply, slots, pin headers

and the mounting of jumpers. Caution should be exercised during

the installation of these modules. Please refer to the motherboard

layout prior to any installation and read the contents in this chapter

carefully.

This chapter includes the following information :

■ Install the CPU and CPU Cooler

■ Install the Memory

■ Install an Expansion Card

■ Install other Internal Connectors

■ Jumpers

This motherboard supports low power energy-saving CPUs (drawing less than

65W under normal operation).

This currently includes most Intel® CoreTM 2 Duo processors, and all Pentium®

Dual-Core and Celeron® models.

CPUs with a power rating higher than 65W are not supported, and will result in

automatic shut-down of the system.

Please visit this website for more supporting information about CPU, Memory and

VGA for your motherboard :

http://www.foxconnchannel.com/product/Motherboards/compatibility.aspx

2-1 Install the CPU and CPU Cooler

Install the CPU

Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.

LGA775 CPU Socket

Alignment Key

Pin-1 corner of the CPU

Socket

LGA775 CPU

Notch

Pin-1 triangle marking

of CPU

Read the following guidelines before you begin to install the CPU :

■ Make sure that the motherboard supports the CPU.

■ Always turn off the computer and unplug the power cord from the power supply before

installing the CPU to prevent hardware damage.

■ Locate the Pin-1 of the CPU. The CPU cannot be inserted if oriented incorrectly. (Or

you may locate the notches on both sides of the CPU and alignment keys on the CPU

socket.)

■ Apply an even and thin layer of thermal grease on the surface of the CPU.

■ Do not turn on the computer if the CPU cooler is not installed, otherwise overheating

and damage of the CPU may occur.

■ Set the CPU host frequency in accordance with the CPU specications. It is not

recommended that the system bus frequency be set beyond hardware specications

since it does not meet the standard requirements for the peripherals. If you wish to

set the frequency beyond the standard specications, please do so according to your

hardware specications including the CPU, graphics card, memory, hard drive, etc.

Hyper-Threading Technology System Requirements:

(Go to Intel's website for more information about the Hyper-Threading Technology)

■ An Intel® CPU that supports HT Technology

■ A chipset that supports HT Technology

■ An operating system that is optimized for HT Technology

■ A BIOS that supports HT Technology and has it enabled

Follow the steps to install the CPU onto the CPU socket :

1. Remove protective socket cover. 2. Release the CPU socket lever.

3. Lift the metal cover on the CPU

socket.

5. When CPU is properly seated,

replace the metal cover and push the

CPU socket lever back to its locked

position.

4. Check pin one marking (triangle)

with the pin one corner of the CPU

socket, align the CPU notches with

the socket alignment keys and gently

put the CPU onto the socket.

Before installing the CPU, make sure to turn off the computer and unplug the power

cord from the power outlet to prevent damage to the CPU.

Install the CPU Cooler

Follow the steps below to correctly install the CPU cooler on the motherboard. (The following procedures use Foxconn cooler as the example.)

1. Apply and spread an even thermal grease on the surface of CPU.

2. Place the four bolts of the CPU cooler to the holes of the motherboard, push them straight down from the top, and the bolts will be fastened on the motherboard. That's it.

3. Chec k the sol de r sid e of the motherboard, the push pin should be

xed as depicted in the picture.

4. Attach t he 4-wire C PU cooler

connector to the CPU FAN header on the motherboard .

Release bolts of CPU cooler from motherboard :

1.Tu r n i n g the push p i n ( b o l t ) along with the direction of arrow (counterclockwise).

2. Pull the push pin straight up.

3. Turning push pin clockwise to its default position.

Use extreme care when removing the CPU cooler because the thermal grease may adhere to the CPU. Inadequately removing the CPU cooler may damage the CPU.

2-2 Install the Memory

Dual Channel Memory Conguration

This motherboard provides two DDR2 memory sockets and supports Dual Channel Technology.

When memory is installed, the BIOS will automatically check the memory in your system.

Two DDR2 memory sockets are divided into two channels :

Channel 0 : DIMM1

Channel 1 : DIMM2

The combinations of DIMM modules are :

DIMM1 DIMM2

Single Channel DS/SS -

Single Channel - DS/SS

Dual Channel DS/SS DS/SS

(DS : Double Side, SS : Single Side, - : No Memory)

It is recommended that memory of the same capacity, brand, speed, and chips be

used and please select dual channel rst to achieve optimum performance.

Read the following guidelines before you begin to install the memory :

■ Make sure that the motherboard supports the memory. It is recommended that memory

of the same capacity, brand, speed, and chips be used.

■ Always turn off the computer and unplug the power cord from the power outlet before

installing the memory to prevent hardware damage.

■ Memory modules have a foolproof design. A memory module can be installed in only

one direction. If you are unable to insert the memory, switch the direction.

Installing a Memory

If you take a look at front side of memory module, it has asymmetric pin counts on both sides separated

by a notch in the middle, so it can only t in one direction. Follow the steps below to correctly install

your memory modules into the sockets.

Step 1: Spread the clips at both ends of the memory socket. Place the memory module onto the socket, then put

your ngers on top edge of the module, and push it down rmly and seat it vertically into the memory

socket.

Step 2: The clips at both ends of the socket will snap into place when the memory module is securely inserted.

Before installing a memory module, make sure to turn off the computer and unplug the

power cord from the power outlet to prevent damage to the memory module. Be sure

to install DDR2 DIMMs on this motherboard.

112-Pin128-Pin

Notch

2-3 Install an Expansion Card

Follow the steps below to correctly install your expansion card in the expansion slot.

1. Locate an expansion slot that supports your card. Remove the metal slot cover from the chassis

back panel.

2. Align the card with the slot, and press down on the card until it is fully seated in the slot.

3. Make sure the metal contacts on the card are completely inserted into the slot.

4. Secure the card's metal bracket to the chassis back panel with a screw.

5. After installing all expansion cards, replace the chassis cover.

6. Turn on your computer. If necessary, go to BIOS Setup to make any required BIOS changes for

your expansion card(s).

7. Install the driver provided with the expansion card in your operating system.

Installing and Removing a PCI Express x16 Graphics Card :

• Installing a Graphics Card:

Gently insert the graphics card into the PCI Express x16 slot.

Make sure the graphics card is locked by the latch at the end of

the PCI Express x16 slot.

• Removing the Card:

Push the latch at the end of the PCI Express x16 slot to release the card and then pull the card straight up from the slot.

PCI

■ Make sure the motherboard supports the expansion card. Carefully read the manual that

came with your expansion card.

■ Always turn off the computer and unplug the power cord from the power outlet before

installing an expansion card to prevent hardware damage.

PCI Express x16

2-4 Install other Internal Connectors

Power Connectors

This motherboard uses an ATX power supply. In order not to damage any device, make sure all the devices have been installed properly before applying the power supply.

24-pin ATX power connector : PWR1

PWR1 is the ATX power supply connector. Make sure that the power supply cable and pins are properly aligned with the connector on the motherboard. Firmly plug the power supply cable into the connector and make sure it is secure.

4-pin ATX 12 V Power Connector : PWR2

Connect the 4-pin ATX 12V power supply to PWR2 and provides power to the CPU.

Pin # Denition Pin # Denition

1 3.3V 13 3.3V

2 3.3V 14 -12V

3 GND 15 GND

4 +5V 16 PS_ON(Soft On/Off)

5 GND 17 GND

6 +5V 18 GND

7 GND 19 GND

8 Power Good 20 NC

9 +5V SB(Stand by +5V) 21 +5V

10 +12V 22 +5V

11 +12V 23 +5V

12 3.3V 24 GND

PWR1

We recommend you using a 24-pin power supply.

If you are using a 20-pin power supply, you need to align the ATX power connector according to the picture.

20-Pin Power

Pin No. 24

Pin # Denition

1 GND

2 GND

3 +12V

4 +12V

3 1

GND

+12V

4 2

PWR2

Audio Connector : CD_IN

CD_IN is a Sony standard audio connector, it can be connected to a CD/DVD-ROM drive through a CD/DVD audio cable.

Audio Connector : F_AUDIO

The audio connector supports HD Audio standard. It provides the Front Audio output choice.

USB Connectors : F_USB1/2

In addition to the four USB ports on the rear panel, this product also provides two 10-pin USB headers on its motherboard. By connecting through USB cables with them, user can quickly expand another four USB ports on the front panel.

Floppy Disk Drive Connectors : FLOPPY

This motherboa rd includes a stand ard floppy disk drive(FDD) connector, supporting 360KB, 720KB, 1.2MB,

1.44MB, and 2.88MB FDDs.

Speaker Connector : SPEAKER

The speaker connector is used to connect speaker of the chassis.

IDE Connectors : PIDE

With the provided Ultra DMA 100/66 IDE ribbon cable, you can connect to any IDE type of hard disk and CD/DVD ROM/RW drive.

IrDA Connector : IR

This connector supports infrared wireless transmitting and receiving device.

PORT1_L PORT1_R

PORT2_L

SENSE_SEND

SENSE1_RETURN

PRESENCEJ

EMPTY SENSE2_RETURN

AUD_GND

109

F_AUDIO

PORT2_R

GND

VCC

D+

D-

D+

GND

D-

VCC

EMPTY

F_USB 1/2

CD_IN

CD_L GND CD_R

SPKJ

EMPTY

SPEAKER

SPKJ

+5V

EMPTY

IRRX

GND

IRTX

Front Panel Connector : FP1

This motherboard includes one connector for connecting the front panel switch and LED Indicators.

Hard Disk LED Connector (HDD-LED)

Connect to the chassis front panel IDE indicator LED. It indicates the active status of the hard disks. This 2-pin connector is directional with +/- sign.

Reset Switch (RESET-SW)

Attach the connector to the Reset switch on the front panel of the case; the system will restart when the switch is pressed.

Power LED Connector (PWR-LED)

Connect to the power LED indicator on the front panel of the chassis. The Power LED indicates the system’s status. When the system is in operation (S0 status), the LED is on. When the system gets into sleep mode (S1) , the LED

is blinking; When the system is in S3/S4 sleep state or power off mode (S5), the LED is off. This 2-pin connector

is directional with +/- sign.

Power Switch Connector (PWR-SW)

Connect to the power button on the front panel of the chassis. Push this switch allows the system to be turned on and off rather than using the power supply button.

Serial ATA Connectors : SATA_1/2

The Serial ATA connector is used to connect with SATA Hard Disk or CD devices which supporting this feature. The current Serial ATA II interface allows up to 300MB/s data transfer rate.

Fan Headers : CPU_FAN, SYS_FAN,

There are two main fan headers on this motherboard. The fan speed can be controlled and monitored in “PC Health Status” section of the BIOS Setup. These fans can be automatically

turned off after the system enters S3, S4 and S5 sleeping

states.

Chassis Intrusion Alarm Header : INTR

The connector can be connected to a security switch on the chassis. The system can detect the chassis intrusion through the function of this connector. If eventually the chassis was closed, the system will send a message out.

SATA _1/2

GND TX+ TXGND RXRX+

GND

CPU_FAN/SYS_FAN

GND POWER SENSE CONTROL

EMPTY

HDD-LED

RESET-SW

PWR-SW

PWR-LED

FP1

INTR

GND

INTRUDERJ

2-5 Jumpers

For some features needed, users can change the jumper settings on this motherboard to modify them. This section explains how to use the various functions of this motherboard by changing the jumper settings. Users should read the following content carefully prior to modifying any jumper setting.

Description of Jumpers

1. For any jumper on this motherboard, Pin 1 can be identied by the bold silkscreen next to it.

However, in this manual, Pin 1 is simply labeled as “1”.

2. The following table explains different types of the jumper settings. "Closed" means placing a jumper

cap on the two pins to temporarily short them. The shorting can also be done by touching two

pins by a screwdriver for a few seconds, but using jumper cap is recommended. It can prevent

hazardous ESD (Electrical Static Discharge) problem.

Clear CMOS Jumper: CLR_CMOS

The motherboard uses CMOS RAM to store the basic hardware information (such as BIOS data, date, time information, hardware password...etc.). Clear CMOS data is the fast way to go back to

factory default when the BIOS settings were mistakenly modied.

The steps to clear CMOS data are :

1. Turn off the computer, unplug the power cord from the power outlet.

2. Remove jumper cap from pins 2-3, put it onto pins 1-2 to short them. This will clear CMOS data.

3. Return the setting to its original with pins 2-3 closed.

4. Plug in the power cord to your computer and turn it on.

5. Go to BIOS Setup to congure new system as described in next chapter.

Jumper Diagram Denition Description

1-2 Set Pin 1 and Pin 2 closed

2-3 Set Pin 2 and Pin 3 closed

Closed Set two pins closed

Opened Set two pins opened

Clear

Normal (Default)

CLR_CMOS

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