JETWAY 531CF User Manual

531CF

USER'S MANUAL

3D AGP VGA / 3D Audio M/B

FOR Pentium processor

The author assumes no responsibility for any errors or omissions which

ma y a p p e a r i n this d o c u men t n o r d o e s i t mak e a commi tment to update
the information contained herein.

NO. G03-531CFR6A

Release date: SEP 2000

** Year 2000 com pliant **

Trademark:

*Pentium is registered trademark and MMX is a trademark of Intel corporation,

the other names and brands are the property of their respective owners.
*Specifications and Information contained in this documentation are furnished for information use only, and are
subject to change at any time without notice, and should not be construed as a commitment by manufacturer.

i

Chapter 1

1-1

Preface

..........................................................................................1

1-2 Orerview

........................................................................................

1

1-3 Key Feature ................................................................................... 2

Chapter 2

Hardware lnstallation

...............................................................................

3

2-1 Unpacking

.....................................................................................

3

2-2 Mainboard Layout

............................................................................. 4

2-3

Quick Reference for Jumpers, Connectors & Expansion Socket

............ 5

2-3-1 lnstallation Steps................................................................... 6

2-3-2 Jumper Settings.................................................................... 6

2-3-3 System Memory (DRAM) ...................................................... 8

2-4 Central processing Unit (CPU)

...................................................

9

2-5 Expansion Cards

..........................................................................

9

2-6 External Connectors

...................................................................

10

Chapter 3

AWARD BIOS SETUP

...........................................................................

16

3-1 STANDARD CMOS SETUP.............................................................17

3-2 BIOS FEATURES SETUP...............................................................18

3-3 CHIPSET FEATURES SETUP.........................................................18

3-4 POWER MANAGEMENT SETUP.....................................................19

3-4-1 The Description of the Power Management.............................21

3-4-2 Description of the Green Functions.........................................23

3-5 PNP/PCI CONFIGURATION SETUP................................................24

3-6 LOAD OPTIMAL DEFAULTS...........................................................25

3-7 LOAD STANDARD DEFAULTS.......................................................25

3-8 INTEGRATED PERIPHERALS SETUP

............................................26

3-9 SUPERVISOR/USER PASSWORD

..................................................26

3-10 SAVE & EXIT SETUP

......................................................................27

3-11 EXIT WITHOUT SAVING.................................................................27

Chapter 4

Software Installed..................................................................................28

4-1 On Board VGA Driver Quick Installation

........................................28

4-2 PC HEALTH MONITOR Driver Quick Installation ...........................28

4-3 Sound Driver & Audio Rack Installation........................................28

APPENDIX-A Magic Install

TABLE OF CONTENT

1

Chapter 1

2-3- Preface

Thank you for chosen 531CF mainboard. This mainboard is based on Pentium® processor PC/AT
compatible system with ISA bus and PCI local bus. This board has including some special designs, such as
share memory 3D AGP VGA on-board, 3D Stereo Sound System audio chip on-board, ACPI/APM power
management along with many other powerful features. We think you will enjoy your personal computer
because of your right choice.

1-2 Overview

• Support 100MHz Bus Frequency processor.

• Support SDRAM clock selectable in 100MHz by jumper setting in order to allow user has

wider choice of SDRAM.

• Provide PC Health Monitoring to track CPU temperature, CPU/SYSTEM FAN Speed and

system voltage.

• Built-In High performance 3D AGP VGA:
∗ Support share memory 2MB to 8MB selectable in BIOS SETUP.
∗ 64 bits memory data interface.
∗ Integrated programmable 24-bit true-color RAMDAC up to 230MHz pixel clock.
∗ Integrated two 96x64 video line buffers for MPEG video playback.
∗ Support 64 bit memory data bus interface.
∗ Integrated a high performance and high quality 3D engine.
∗ Support DIC, Direct Draw Driver.
∗ Support AGP Spec.1.0 compliant, 1x mode(66MHz), 2x mode(133MHz).

• Built in high quality PCI-Based HRTF 3D Extension Positional Audio Chip
∗ Supports rear side speakers, C3DX positional audio in 4 channels speaker mode.
∗ Professional digital audio interface to support 24-bit SPDIF IN and OUT (44.1K and 48K

format).

∗ HRTF-base 3D positional audio, supporting DirectSound™ 3D and Aureal A3D™

interface.

∗ Digital functions that capable to provide hi-fi stereo, Dolby, 3D surround effects, and

playing MP3 music.

• You can add our Fiber Optic upgrade kit (Optional) for super high quality sound transaction,

such as playing MD/CD; MD record ing; CD-ROM directly recording to MD; (This upgrade kit

includes Optical Module, Optical Cable).

2

1-3 Key Feature

• Multi-Speed Support : support 66/75/83/95/100MHz Host Bus Frequency for Intel Pentium

processor with MMX technology ,AMD K5/K6/K6-2/K6-3,Cyrix 6x86 M1/M2,IDT Winchip/

Winchip2 CPU on a ZIF Socket7.

• Chipset: SiS 530/5595 AGPset chip with I/O subsystems and CMI 8738 PCI Audio chip.

• L2 Cache : Provide on board 512K/1MB Pipelined Burst SRAM to increase system

performance.

• DRAM Memory Support: support Two 168-pin DIMMS (3.3V) from a memory size between

8MB to 512MB.

• ISA and PCI expansion Slots: Provides one 16-bit ISA slots, three PCI slots.

• Super Multi-I/O: Provides two high-Speed UART compatible serial ports and one parallel port

with EPP and ECP capabilities. UART2 can also be directed to the Infrared Module for
wireless connections. Two floppy drives of either 5.25” or 3.5” (1.44MB or 2.88MB) are also
supported without an external card.

• PCI Bus Master IDE Controller and ULTRA DMA 33/66: On-board PCI Bus Master IDE

controller with two connectors that supports four IDE devices in two channels, provides faster
data transfer rates, and supports Enhanced IDE devices such as Tape Backup, CD-ROM
drives and LS-120. This controller also supports PIO Modes 3 and 4 and Bus Master IDE DMA
33/66 Mbyte/Sec.

• ACPI supporting for OS Directed Power Management.
Keyboard Passward Power On: When with JP5 set to Enabled, you can choose “power on”

function by using password within BIOS to control your power supply to power –on by
keyboard instead of power button .

Ring-In Wake up: When Ring-In the system can wake up from SMI Mode.
Ring-In Power On: When Ring-In the system can power on automatic by this
RTC Power On: Enabled RTC Power On function, you can set RTC alarm to power on the system

at the time length that correspond to your setting.

Power Button: Press the button will place the system power on/off.
Software off when uses ATX power supply.

• Power Support: Efficient PWM switching power instead of traditional Linear Voltage

Regulator to prevent power component from being burned-out.

• Meets PC99 Requirements.

• Optional IRDA: This motherboard supports an optional infrared port modul module for

wireless interface.

• USB Port Connector: This motherboard supports two USB port connectors for USB devices.

• Micro ATX Form Factor: Dimensions 19cm x 24.5cm.

3

Chapter 2

Hardware Installation

2-3- Unpacking

This mainboard package should contain the following:

• The 531CF mainboard

• USER’S MANUAL for mainboard

• Cable set for IDE x1, Floppy x1,COM x1

• CD fo r Drivers P ACK

The mainboard contains sensitive electronic components that can be easily damaged by electron­static, so the mainboard should be left in its original packing until it is installed.

Unpacking and installation should be done on a grounded anti-static mat.
The operator should be wearing an anti static wristband, grounded at the same point as the anti-

static mat.
Inspect the mainboard carton for obvious damage. Shipping and handling may cause damage to

your board. Be sure there are no shipping and handling damages on the board before proceeding.
After opening the mainboard carton, extract the system board and place it only on a grounded

anti-static surface component side up. Again inspect the board for damage.
Press down on the entire socket IC’s to make sure that they are properly inserted. Do this only on

with the board placed on a firm flat surface.

Warning: Do not apply power to the board if it has been damaged.

You are now ready to install your mainboard. The mounting hole pattern on the mainboard
matches the Micro ATX system board.

It is assumed that the chassis is designed for a Micro ATX main board mounting. Place the
chassis on the anti-static mat and remove the cover.

Take the plastic clips, Nylon stand-off and screws for mounting the system board, and keep them
separate.

4

2-3-

Mainboard Layout

KBMS1

ZIF SO C K E T 7

CPU

FDD

IDE2

IDE1

U12

SIS530

PW1

ATX POWER CONN.

COM2

IS A1

USB

BATT

.

PCI 2

PCI

3

BIOS

U17

KEYLOCK

TBS W

SPEAKER

RST

TBL ED

PS-ON

HDLED

SMI

JP9

DIMM2

DIMM1

V

GA1

U17

SIS559

5

MIC

LINE

-I

N

LINE

-OUT

GAME PORT

COM1

LPT1

ITE 8661F

U

2

JP11

64K X6

4

32K X8

U

9

U

5

C M I8738

JP

3

SPKIN

SDIFOUT

SPDIFIN

JP

5

SYSFAN

WOL

J

P12

JP10

CPU-FAN

JP2

JP1

JP7

JP

6

Figure 2-1

5

2-3-

Quick Reference for Jumpers, Connectors &

Expansion Socket

Jumpers

Jumper Name Description Page

JP9 CPU Voltage Selection ON:Short , OFF:Open p. 6
JP10,JP11 CPU Bus Frequency Selection ON:Short , OFF:Open p. 6
JP12 CMOS RAM Clear 2-3 Normal , 1-2 Clear CMOS p. 8
JP3 Audio chip Enabled/Disabled 2-3 : Enabled, 1-2 : Disabled p.14
JP5 Keyboard power on function 1-2 : Disabled, 2-3 : Enabled p.15

Connectors

Connector Name Description Page

PW1 ATX Power Connector 20-Pin Block p. 9
KBMS1 PS/2 Keyboard/PS/2 Mouse 6-Pin Female p.10

USB USB Port Connector 5-Pin Connector

p.13

LPT1 Parallel Port Connector 26-Pin Female p.10
VGA1 VGA Connector 15-Pin Female p.10
GAME PORT Line IN/Line Out/MIC /Game Port Connector 15-pin Connector + 3 phone jack p.11
COM1 Serial Port COM1 10-Pin Block p.10
COM2 Serial Port COM2 10-Pin Block p.10
FDD Floppy Driver Connector 34-Pin Block p.11
IDE1 Primary IDE Connector 40-Pin Block p.11
IDE2 Secondary IDE Connector 40-Pin Block p.11
HDLED IDE activity LED 2-Pin Connector p.12
Case Connections Front Panel Connector 16-Pin Block

p.12

IR1 Infrared Module Connector 5-Pin Block p.12

CPUFAN/SYSFAN FAN Connector 3-Pin Block p.13

PS-ON ATX power button/soft power button 2-Pin Connector p.13
JP6 CD-Audio/Panasonic 4-pin Block p.14
JP7 CD-Audio/Sony 4-pin Block p.14
WOL Wake On LAN 3-pin Block P.14
JP1 AUX Connector 4-pin Block p.15
SPKIN PC Speaker In 2-pin Block p.14
SPDIFIN SPDIFIN (Sony/Philips Digital Interface) 3-pin Block p.15
SPDIFOUT SPDIFOUT (Sony/Philips Digital Interface) 2-pin Block p.15
JP2 Opticl Kit Connector 10-pin Block p.15

Expansion Slots

Socket/Slot Name Description

DIMM1,DIMM2 DIMM Module Socket 168-Pins DIMM SDRAM Module Expansion Socket
Zip Socket7 CPU Socket Socket for Central Processing Unit (CPU)
ISA1 ISA Slot 16-bits ISA Bus Expansion slots
PCI1, PCI2,PCI3 PCI Slot 32-bits PCI Local Bus Expansion slots

6

2-3-1 Installation Steps

Before using your computer, you must follow the steps as follows:

1. Set Jumpers on the Motherboard

2. Install the CPU

3. Install DRAM Modules

4. Install Expansion card

5. Connect Cables, Wires, and Power Supply

2-3-2

Jumper Settings

CPU Voltage Selection: JP9 (2x5pin Block)

This jumper is used for adjusting CPU working voltage, for this main board design it can auto
detect the single voltage CPU or dual voltage CPU.

The table of JP9 CPU voltage selection

JP9 1-2 3-4 5-6 7-8 9-10

1.8V OFF ON OFF ON ON

2.0V OFF ON ON ON ON

2.1V ON OFF OFF OFF OFF

2.2V OFF ON OFF OFF OFF

2.3V ON ON OFF OFF OFF

2.4V OFF OFF ON OFF OFF

2.8V OFF OFF OFF ON OFF

2.9V ON OFF OFF ON OFF

3.2V OFF OFF ON ON OFF

3.3V ON OFF ON ON OFF

3.4V OFF ON ON ON OFF

3.5V

ON

ON ON ON OFF

∗ If your CPU Type is not including in above table, please refer to the CPU voltage selection on below

to choose the correct working voltage for your CPU.

2.9V

JP3

1

2

9

10

3.4V

JP3

1

2

9

10

3.2V

JP3

1

2

9

10

3.3V

JP3

1

2

9

10

3.5V

JP3

1

2

9

10

CPU Volt age S electio n

1.8V

JP3

1

2

9

10

2.0V

JP3

1

2

9

10

2.2V

JP3

1

2

9

10

2.8V

JP3

1

2

9

10

2.3V

JP3

1

2

9

10

2.1V

JP3

1

2

9

10

2.4V

JP3

1

2

9

10

CPU Type selection:

This mainboard designs JP10 to select the CPU external clock (Host Bus Frequency) and
JP11 to select the CPU Bus Frequency ratio, the external clock frequency multiplied by Bus
frequency ratio is the CPU frequency as the tables below:

•

Table for CPU external frequency / SDRAM Clock setting : JP10

FS0 FS1 FS2 SD CPU Bus Clock SDRAM Clock PCI Clock

ON ON ON OFF 66 MHz 66 MHz 33
ON ON ON ON 66 MHz 100 MHz 33

OFF ON ON OFF 75 MHz 75 MHz 30

ON OFF ON OFF 83 MHz 83 MHz 33
OFF ON ON ON 90 MHz 90 MHz 30
OFF OFF ON OFF 95 MHz 95 MHz 31

ON OFF ON ON 95 MHz

63 MHz *

31

ON ON OFF OFF 100 MHz

100 MHz *

33.3

7

FS0 FS1 FS2 SD CPU Bus Clock SDRAM Clock PCI Clock

OFF OFF ON ON 100 MHz

66 MHz

*

33

ON ON OFF ON 100 MHz

75 MHz

*

30

OFF ON OFF OFF 112 MHz

112 MHz

*

37

OFF ON OFF ON 112 MHz

74 MHz

*

37
ON OFF OFF OFF 124 MHz 124 MHz 31
ON OFF OFF ON 124 MHz 82 MHz 31

OFF OFF OFF OFF 133 MHz 133 MHz 33
OFF OFF OFF ON 133 MHz 89 MHz 33

※

SDRAM Clock Asynchronous as CPU Bus frequency let user can use slow

speed SDRAM when CPU clock over 83MHz.

• Table for CPU ratio selector : JP11

CPU ratio BF0 BF1

BF2

1.5 X / 3.5 X OFF OFF OFF

2.0 X ON OFF OFF

2.5 X ON ON OFF

3.0 X OFF ON OFF

4.0 X ON OFF ON

4.5 X ON ON ON

5.0 X OFF ON ON

5.5 x OFF OFF ON

Table for CPU Type selection . S : short O : open

JP10 (Bus clock) JP11 (clock ratio)

CPU Type

SD FS2 FS1 FS0 BF0 BF1 BF2

Bus clock Clock ratio

233MHz Pentium processor
with MMX technology
AMD K6-233
Cyrix 6X86 MII 300

O S S S O O O 66MHz

3.5X

200MHz Pentium processor
with MMX technology
AMD K6-200
Cyrix/IBM 6X86 MII 233

O S S S

O S O 66MHz

3.0X

AMD K6/266
AMD K6-2/266

O S S S

S O S 66MHz

4.0X

AMD K6/300 O S S S S S S 66MHz 4.5X
AMD K6-2/300 O O S S O S O 100MHz 3.0X
AMD K6-2/333 O S O O O O O 95MHz 3.5X
AMD K6-2/350 O O S S O O O 100MHz 3.5X
AMD K6-2/366 O S S S O O S 66MHz 5.5X
AMD K6-2/400 O O S S O O S 100MHz 4.0X
AMD K6-3/400 O O S S S O S 100MHz 4.0X
AMD K6-2/450 O O S S S S S 100MHz 4.5X
AMD K6-3/450 O O S S S S S 100MHz 4.5X
AMD K6-2/475 O S O O O S S 95MHz 5.0X
AMD K6-2/500, K6-3/500 O O S S O S S 100MHz 5.0X
AMD K6-2/550, K6-3/550 O O S S O O S 100MHz 5.5X
Cyrix MII-333 O S O S O S O 83MHz 3.0X
Cyrix MII-333 O S S O O O O 75MHz 3.5X
Cyrix MII-366 O O S S S S O 100MHz 2.5X
Cyrix MII-400 O S O O O S O 95MHz 3.0X
Cyrix MII-433 O O S S O S O 100MHz 3.0X
IDT Winchip-225 O S S O O S O 75MHz 3.0X
IDT Winchip2-300 O O S S S S O 100MHz 2.5X

8

NOTE: 1. Before installing the CPU, Please check the CPU Frequency and Clock Ratio from your

supplier.

2. For Cyrix/IBM 6X86MX series, please double check the CPU’s Frequency and Clock Ratio.

1. CMOS RAM: JP12 (Yellow color selector)

WARNING: Make sure your computer is POWER OFF when you are CLEAR CMOS.

Connect a jumper Cap over this jumper for a few seconds, will clears information stored in the
CMOS RAM Chip that input by user, such as hard disk information and passwords. After
CLEAR CMOS, you must enter the BIOS setup (by holding down <DEL> during power-up) to
re-enter BIOS information (see BIOS SETUP).

Selections JP12
Normal 2-3 (Default)

Clear CMOS 1-2 (momentarily)

Normal

123

CMOS RAM (Normal / Clear CMOS Data)

Clear CMOS

123

2-3-3 System Memory (DRAM)

This main board supports two 168-pins DIMM modules, the Max Memory Size is 512MB Because
of the VGA share memory function, the system must always occupy BANK0 (DIMM1)to booting.

DIMM 1 DIMM 2 System can be Accept or Not

168-pin DIMM

× Accept

168-pin DIMM 168-pin DIMM

Accept

168-pin DIMM

× Accept

168-pin DIMM 168-pin DIMM

Accept

×

168-pin DIMM

Not Accept

× × Not Accept
×

168-pin DIMM

Not Accept

2-4 Central Processing Unit (CPU)

The main board provides a 321-pins ZIF Socket 7. The CPU on mother board must have a fan
attached to prevent overheating.

WARNING: Without a fan, the CPU will be overheated and cause damage to both the CPU and the

motherboard.

To install a CPU, first turn off your system and remove its cover. Locate the ZIF socket and open
it by first pulling the lever sideways away from the socket then upwards to a 90-degree right angle.
Insert the CPU with the white dot as your guide. The white dot should point towards the end of
the level. The CPU has a corner pin for three of the four corners, the CPU will only fit in the one
orientation as shown as follow. With the added weight of the CPU fan, no force is required to
insert the CPU. Once completely inserted, hold down on the fan and close the socket’s lever.

9

IMPORTANT: You must set jumpers JP10,JP11 “CPU Type selector” on page 6 and jumper JP9 “CPU

Voltage Selection” on page 6 depending on the CPU that you install.

CPU ZIF Socket 7

Socket 7

Lock

Blank

Lever

White Dot

Socket 7

CPU

2-5 Expansion Cards

First read your expansion card documentation on any hardware and software settings that may be
required to setup your specific card.

Installation Procedure:

1. Read the documentation for your expansion card.

2. Set any necessary jumpers on your expansion card.

3. Remove your computer’s cover.

4. Remove the bracket on the slot you intend to use.

5. Carefully align the card’s connectors and press firmly.

6. Secure the card on the slot with the screw you remove in step 4.

7. Replace the computer’s cover.

8. Setup the BIOS if necessary.

9. Install the necessary software drivers for your expansion card.

2-6 External Connectors

1. ATX Power Connector (20-pins block): PW1

ATX Power Supply connector. This is a new defined 20-pin connector that usually comes with ATX case.
The ATX Power Supply allows to use soft power on momentary switch that connect from the front panel
switch to 2-pin Power On jumper pole on the motherboard. When the power switch on the back of the ATX
power supply turned on, the full power will not come into the system board until the front panel switch is
momentarily pressed. Press this switch again will turn off the power to the system board.( * Please wait

aleast 4sec , when turn off and turn on the power .)

Pin 1

PIN ROW2 ROW1

1 3.3V 3.3V
2 -12V 3.3V
3 GND GND
4 Soft Power On 5V
5 GND GND
6 GND 5V
7 GND GND
8 -5V Power OK
9 +5V +5VSB(for Soft Logic)

10 +5V +12V

2. PS/2 Mouse & PS/2 Keyboard Connector: KBMS1

10

The PS/2 Keyboard is a 6-pin miniature DIN connector. It is for a standard PS/2 style
keyboard. May also be known as a 101 enhanced keyboard. The PS/2 Mouse connector is a
similar 6-pin, miniature DIN connector.

3. Parallel Port Connector (25-pin female): LPT1

Parallel Port connector is a 25-pin D-Subminiature Receptacle connector. The On-board
Parallel Port can be disabled through the BIOS SETUP. Please refer to Chapter 3
“INTEGRATED PERIPHERA LS SETUP” section for more detail information.

Parallel Port Connector

4. Serial Port COM1 and VGA Connector: COM1, VGA1

COM1 is the 9-pin D-Subminature mail connector. VGA1 is the 15-pin D-Subminature
Recepfacle connector.The On-board serial port can be disabled through BIOS SETUP.
Please refer to Chapter 3 “INTEGRATED PERIPHERALS SETUP“ sec tion f o r m o re detail
information.

Serial Port COM1 & VGA1 Connector

COM1 VGA 1

5. Serial Port COM2 Connector: COM2

This connector support the provided serial port ribbon cabled with mounting braket, Connect
the ribbon cable to this connector and mount the raket to the case on an open slot.

Pin 1

COM 2

Seri al port COM2Connector

PS/2 Keyboard

PS/2 Mouse

11

6. Audio and Game Connector : GAME PORT

This Connector are 3 phone Jack for LINE-OUT,LINE-IN,MIC and a 15-pin
D-Subminiature Receptacle Connector for joystick/MIDI Device.
Line-out : audio output to speaker
Line-in : audio input to sound chip
MIC : Microphone Connector
Game/MIDI : for joystick or MIDI Device

Audio and Game Connector

LINE-OUT MICLINE-IN

Game / MIDI PORT

7. Floppy drive Connector (34-pins block): FDD

This connector supports the provided floppy drive ribbon cable. After c onnecting the single plug

end to motherboard, connect the two plugs at other end to the floppy drives.

Pin 1

Floppy Drive Connector

8. Primary IDE Connector (40-pins block): IDE1

This connector supports the provided IDE hard disk ribbon cable. After connecting the single

plug end to motherboard, connect the two plugs at other end to your hard disk(s). If you install
two hard disks, you must configure the second drive to Slave mode by setting its jumpers
accordingly. Please refer to the documentation of your hard disk for the jumper settings.

Primary IDE C onnector

Pin 1

9. Secondary IDE Connector (40-pins block): IDE2

This connector connects to the next set of Master and Slave hard disks. Follow the same

procedure described for the primary IDE connector. You may also configure two hard disks to
be both Masters using one ribbon cable on the primary IDE connector and another ribbon
cable on the secondary IDE connector.

12

Secondary ID E C onnector

Pin 1

10. IDE activity LED: HDLED

This connector connects to the hard disk activity indicator light on the case.

IDE (Hard Dr ive) LED

-

12

3

4

HDLED

11. Turbo LED switch: TBLED

The motherboard‘s turbo function is always on. The turbo LED will remain constantly lit while

the system power is on. You may wish to connect the Power LED from the system case to
this lead. See the figure below.

12. Reset switch lead: RESET

This 2-pin connector connects to the case-mounted reset switch for rebooting your computer

without having to turn off your power switch. This is a preferred method of rebooting in order
to prolong the life of the system‘s power supply. See the figure below.

13. Keyboard lock switch lead: KEYLOCK

This 5-pin connector connects to the case-mounted key switch for locking the keyboard for

security purposes. See the figure below.

14. Speaker connector: SPK

This 4-pins connector connects to the case-mounted speaker. See the figure below.

System Case Connections

GND

GND

GND

Turbo LED

Reset SW

Keyboard

Lock

Power LED

VCC

VCC

GND

Turbo SW

NC

GND

GND

NC

Speaker

15. IR infrared module connector: IR1

This connector supports the optional wireless transmitting and receiving infrared module.

This module mounts to small opening on system cases that support this feature you must
also configure the setting through BIOS setup. Use the four pins as shown on the Back View
and connect a ribbon cable from the module to the motherboard according to the pin definitions.