AZZA 6VBD User manual

VIA 82C693
MAINBOARD
( VER. 1.x )
USER’S MANUAL
DOC. NO. UM-IBD-E1 ...................................................................PRINTED IN TAIWAN

VIA 82C693 MAINBOARD TABLE OF CONTENTS
i
TABLE OF CONTENTS
Chapter & Section Page
1. INTRODUCTION ..................................................................................1-1
1.1 OVERVIEW .................................................................................................1-1
1.2 MAINBOARD LAYOUT ...........................................................................1-2
1.3 SPECIFICATIONS......................................................................................1-3
2. INSTALLATION ...................................................................................2-1
2.1 UNPACKING ...............................................................................................2-1
2.2 AMAZING WAYS TO POWER ON THE PC SYSTEM........................2-1
2.3 POWER OFF THE PC SYSTEM ..............................................................2-5
3. HARDWARE SETUP...........................................................................3-1
3.1 INSTALLATION OF CPU .........................................................................3-1
3.2 INSTALLING THE DRAM MODULES ...............................................3-2
3.3 CONNECTORS............................................................................................3-4
3.4 JUMPERS.....................................................................................................3-16
4. AWARD BIOS SETUP ........................................................................4-1
4.1 GETTING STARTED ................................................................................4-1
4.2 MAIN MENU ..............................................................................................4-2
4.3 CONTROL KEYS.......................................................................................4-2
4.4 STANDARD CMOS SETUP.....................................................................4-3
4.5 BIOS FEATURES SETUP........................................................................4-4
4.6 CHIPSET FEATURES SETUP................................................................4-7
4.7 POWER MANAGEMENT SETUP .........................................................4-12
4.8 PNP/PCI CONFIGURATION...................................................................4-16
4.9 INTEGRATED PERIPHERALS ..............................................................4-20
4.10 LOAD SETUP DEFAULTS......................................................................4-23
4.11 SUPERVISOR PASSWORD / USER PASSWORD.............................4-24
4.12 IDE HDD AUTO DETECTION ..............................................................4-25
4.13 SAVE & EXIT SETUP .............................................................................4-26
4.14 EXIT WITHOUT SAVING ......................................................................4-27

VIA 82C693 MAINBOARD
ii
SOMETHING IMPORTANT !
¶TRADEMARKS
All trademarks used in this manual are the property of their respective owners.
¶LOAD SETUP DEFAULTS
“LOAD SETUP DEFAULTS” is the function which will have the BIOS default
settings loaded into the CMOS memory, these default settings are the best-case
values which will optimize system performance and increase system stability This
function will be necessitated when you receive this mainboard, or when the system
CMOS data is corrupted. Please refer to the Section 4.8 for the procedures.
¶DISCHARAGE CMOS DATA
Whenever you want to discharge the CMOS data or open the system chassis, Make
sure to disconnect the AC power first because there is always the 5V standby voltage
connected to the ATX form-factor mainboard. Without disconnecting the AC power
connector from the PC system, the mainboard can be damaged by any improper
action .
¶WAKE ON LAN
In order to support the Wake On LAN feature, the system requires a special SPS
(Switching Power Supply), Such power supply must be able to provide at least 700
mA of driving capability on the “5V standby” voltage. Please refer to the Section 3.3
for pin assignment.
¶WARNING !
The "Static Electricity" may cause damage to the components on the mainboard, In
order to avoid the damage to the mainboard accidentally, please discharge all static
electricity from your body before touching this mainboard.
¶NOTICE
Information presented in this manual has been carefully checked for reliability;
however, no responsibility is assumed for inaccuracies. The information contained in
this manual is subject to change without notice.

VIA 82C693 MAINBOARD INTRODUCTION
1-1
1. INTRODUCTION
1.1 OVERVIEW
This mainboard is a high performance personal computer mainboard with100MHz ultra
high front side bus frequency designed for Pentium™ II and Celeron™ processors. It is
an ATX form-factor mainboard with A.G.P. (Accelerated Graphics Port) and PCI Local
Bus on board, Designed based on the VIA 82C693 chipset and Winbond® I/O chipset,
built-in two channel “PIO” and “Ultra DMA/33 Bus Master” mode PCI IDE ports, one
Floppy Disk control port, two high speed Serial ports (UARTs) and one multi-mode
Parallel port and supports PS/2™ mouse, IR and USB ports. It is designed for 233MHz,
266MHz, 300 MHz, 333MHz , 350MHz, 400MHz and 450MHz high performance
Pentium™ II and Celeron™ (S.E.C. Cartridge) processor for high-end and true
GREEN-PC computer systems.
The Pentium™ II Processor is a 64-bit processor with RISC technology, which offers
several key features such as built-in L2 cache (256KB/512KB), 12-stage super-pipeline
architecture, out of order execution .... etc. In order to optimize its capabilities and
performances, the 32-bit Operating System (such as Windows® NT and OS/2™) and
32-bit applications are recommended.
The Accelerated Graphics Port (A.G.P.) on the mainboard is designed for AGP 3D
video display card. Unlike PCI-based display cards, the AGP technology provides
lightning data throughput to fully facilitate the 3-Dimensional and multimedia graphics
display. The data transfer rate on AGP can be up to 133Mhz and which is much faster
than the traditional 33MHz PCI VGA card.
The AGP is a new video display technology and it requires device driver or new
Operating System to enable this accelerated graphic feature. Windows® 98 supports
AGP directly but Windows® 95 still need the appropriate device drivers to support
AGP feature. Please don’t worry about the device driver, because you can always find
the device driver included in the AGP cards. Regarding the definition of AGP interface
and its functionality, please refer to the latest A.G.P. Interface Specification. which can
be found at the Intel web site, the URL is “developer.intel.com/technology/agp”

VIA 82C693 MAINBOARD INTRODUCTION
1-2
1.2 MAINBOARD LAYOUT
PCISLOT
USB
2
USB
1
PCISLOT
PCISLOT
BAT1
SLOT1
SPKR
AGPSLOT
ISASLOT
ISASLOT
PCISLOT
CN1
CN3,CN6,CN7
CN2
CN9IDE2
CN10IDE1
CN11FDC
CN4
BIOS
KBLOCK
CN1
CPUFAN
CN14
PCISLOT
JP100

VIA 82C693 MAINBOARD INTRODUCTION
1-3
1.3 SPECIFICATIONS
¥CPU
Intel® Pentium™ II and Celeron™ processor 233 MHz, 266 MHz, 300 MHz,
333MHz. 350MHz, 400MHz and up to 450MHz.
¥CPU VCC
Switching Voltage Regulator circuits on board, supports +1.80V DC through
+3.5V DC CPU Core Voltage.
Note : The CPU Core Voltage will be Detected and adjusted automatically by the
VID-pin on the CPU, so there is no manual-adjustment required to select the CPU
voltage. Simply plug in the CPU and start immediately.
¥WORD SIZE
Data Path : 8-bit, 16-bit, 32-bit, 64-bit
Address Path : 32-bit
¥PC SYSTEM CHIPSET
VT 82C693, VT 82C596A
¥SUPER I/O CHIPSET
Winbond® W83977TF-AW
¥FRONT SIDE BUS FREQUENCY
66 MHz and 100MHz selectable.
¥MEMORY
DRAM : Four 168-pin DIMM sockets are designed onboard which support 8, 16,
32,64 or 128MB 3.3V SDRAM DIMM module. Maximum memory size can be up
to 512 MB with Parity / ECC (Error Checking and Correcting) supported.
CACHE:512KB pipelined burst SRAM built-in Pentium™ II processor. 0KB or
128KB SRAM in Celeron™ processor.
¥BIOS
AWARD System BIOS. 128KB x 8 Flash ROM
(Supports Plug & Play, ACPI, DMI and Green functions).

VIA 82C693 MAINBOARD INTRODUCTION
1-4
¥EXPANSION SLOTS
AGP Slots : 32-bit x 1 (Supports 1x or 2x AGP graphics cards)
PCI Slots : 32-bit x 5 (All Master/Slave, PCI 2.1 Compliant)
ISA Slots : 16-bit x 2 (One of the slot is PCI/ISA shared)
¥WOL PORTS
One WOL connector supports Wake-On-LAN (WOL up-designed)
¥SB-LINK PORTS
One SB-LINK feature connector to support PCI sound cards. (such as Creative™
Labs EMU8008 sound chip)
¥USB PORTS
Two Universal Serial Bus (USB) ports.
¥IDE PORTS
Two channels of Ultra DMA/33 Bus Master IDE ports, which will support up to 4
IDE devices like IDE hard disk, ATAPI CD-ROM and LS-120/ZIP-100 devices.
The IDE ports can be programmed to support PIO Mode 4, DMA mode 2 and Ultra
DMA/33.
¥SUPER I/O PORTS
1. Two high speed NS16C550 compatible serial ports (UARTs).
2. One parallel port, supports SPP/EPP/ECP mode.
3. One Floppy Disk Control port.
¥IR PORT
One HPSIR and ASKIR compatible IR transmission connector (5-pin).
One Consumer IR transmission connector (4-pin, optional).
¥MOUSE AND KEYBOARD
One PS/2™ mouse connector, One PS/2™ keyboard connector.

VIA 82C693 MAINBOARD INTRODUCTION
1-5
¥HARDWARE MONITORING (optional)
Winbond W83781D is designed on the board to monitor hardware healthy status
like system voltage, system temperature, and cooling fans. When the CPU is over
heated, the system BIOS will tell the system board to give a series of beeping alarm
and then slow down the CPU speed (throttling speed) so that you can take proper
action to prevent your system from damage. When you hear the beeping alarm, be
sure to turn the power off and check on the cooling fans (especially the CPU
cooling fan ) to see whether it is working properly or not. If you don’t know how to
handle it, send the PC system to your dealer for technical support.
This mainboard includes the hardware monitoring program and you can use it to
monitor the system healthy status. When you find there is the Winbond W83781D
installed on the board, you can run the hardware monitoring program which comes
in the CD disc and then it will monitor the system healthy status all the time.
¥ACPI
Advanced Configuration and Power Interface (ACPI) function is strongly
recommended by PC’98 because it will let you have many additional features and
that will make your PC system becomes very friendly and convenient. Followings
are the ACPI features designed on the board:
1. On Now: power on the system by panel-switch, Keyboard, PS/2™ Mouse,
Modem ring-in, RTC alarm or LAN signal.
2. Power off (soft-off) by OS or Panel-switch.
3. CPU cooling fan auto-off during Suspend state.
4. Resuming of PC system. (such as Modem ring-in, RTC alarm, .... etc.)
5. Supports Full-On/Doze/Standby/Suspend operating modes.
¥DIMENSION
1. Width & Length : 305 mm x 190 mm.
2. Height : 2 1/2 inches with CPU Retention Mechanism.
3. PCB Thickness : 4 layers, 0.05 inches normal.
4. Weight : 18 ounces.
ENVIRONMENT LIMIT
1. Operating Temperature : 10to 40. (50to 104)
2. Required Airflow : 50 linear feet per minute across CPU.
3. Storage Temperature : - 40to 70. (- 40to 158)
4. Humidity : 0 to 90% non-condensing.
5. Altitude : 0 to 10,000 feet.

VIA 82C693 MAINBOARD INSTALLATION
2-1
2. INSTALLATION
2.1 UNPACKING
The mainboard contains the following components. Please inspect the following
contents and confirm that everything is there in the package. If anything is missing or
damaged, call your supplier for instructions before proceeding.
lThis mainboard.
lOne USER‘S MANUAL.
lOne Cable set for IDE and Floppy devices.
lOne Pentium™ II Processor Retention Mechanism (RM).
lOne CD diskette for device driver and utility programs.
This mainboard contains electrostatic sensitive components and it can be easily
damaged by static electricity. So please leave it sealed in the original packing until
when installing.
A grounded anti-static mat is recommended when unpacking and installation. Please
also attached an anti static wristband to your wrist and have it grounded to the same
point as the anti-static mat.
After the opening of the mainboard carton, please observe the mainboard carefully to
make sure there is no shipping and handling damage before you can start to install the
PC system.
Having finished all the procedures above, you are now ready to install the mainboard to
the chassis. Please make sure that the chassis is the ATX type so that the mounting hole
will match with this mainboard.
2.2 AMAZING WAYS TO POWER ON THE PC SYSTEM
When the mainboard has been installed successfully, there are several ways to power
on the system. Please read the following description for all the details.

VIA 82C693 MAINBOARD INSTALLATION
2-2
POWER BUTTON
The power button can be programmed by COMS setup program and it has different
features. Please refer to page 3-23 and page 3-24 for detail function description.
Note: This power button can not be used to power-on the PC system if the
”Password“ is selected to power on your system. (please refer to Section 4.8 for
the “INTEGRATED PERIPHERALS“ in the CMOS setup.) However, you can
always use the power button to turn off the power.
¨KEYBOARD (PASSWORD OR HOT KEY)
It is a nightmare when someone uses your PC system without your permission and
modifies or destroys all the valuable data stored in the system. Now the problem can
be avoided by using this mainboard because it allows you to enter your personal
password or a combination of hot key so that you can use it to power on your
system. When the system power is off, This mainboard still keeps scanning the
keyboard status waiting for the correct password or hot key input to turn on the
system power (the stand-by 5V is still working and the power LED on the keyboard
is still active). Without the correct password or hot key, no one else can turn on the
PC system ( neither by the power button ). So the PC system is secured for you.
There are two ways to power-on the PC system by keyboard, they are “Password”
and “Hot KEY”. Please refer to Section 4.8 for the BIOS setup.
When the “Password” and “Hot KEY” is selected, you will have to reboot the PC
system to activate the setting, when you see the POST (Power On Self Test) is
completed, the setting is changed and stored in the CMOS memory. Having finished
the procedure, you may turn the power off and then you can use the keyboard to
power-on the PC system afterward.
In case that you forget the “Password” or “Hot Key”, disconnect the AC power for
30-60 seconds then re-connect the AC power to the PC system, the power button
will be activated again and you can use the power button to turn on the system.
Input your personal password again in the BIOS setup program, and then you may
use the new password to power-on the PC system afterward.
¨PS/2™ MOUSE (MOUSE LEFT OR MOUSE RIGHT BUTTON)
When you are tired of pressing on the power button or keying in the password to
turn on the PC system, there is another extremely convenient way for you.

VIA 82C693 MAINBOARD INSTALLATION
2-3
When you have a PS/2™ mouse connected to the system, you may change the setup
in the BIOS and use the mouse click to turn on the PC system power. Please refer to
section 4.8 for the BIOS setting
To use the mouse key to turn on the PC system power, the mouse click must be
done quickly and continually. Basically, 2-5 quick clicks on the mouse key ( left key
or right key ) will turn the power immediately.
In order to activate the mouse key feature, you will have to reboot the PC system
after the BIOS setting and wait until the POST (Power On Self Test) is completed.
Having finished the procedure, you may use the mouse key to power-on the PC
system afterward..
Note: This feature is not available on the COM port mouse(serial mouse).
¨RTC ALARM
PC system can be waked up by the RTC setting in the CMOS. You can set the
alarming date and time in the RTC memory, When RTC alarms, the PC system will
be triggered and wakes up automatically.
Enable the “Resume by Alarm” selection in the BIOS setup utility, and then input
the accurate date and time in following fields. (the “Resume by Alarm” is located in
the “POWER MANAGEMENT SETUP”, please refer to Section 4.7), Having
stored the RTC alarm setting, the PC system will be turned on automatically
according to the date and time which is recorded in the CMOS memory.
Same as the above, you have to reboot the PC system and wait for the POST (Power
On Self Test) is completed to enable the RTC alarm.
¨MODEM RING-IN
Everyone knows that a PC system can be used as a fax machine to send or receive
fax messages. But most people still use fax machine to receive their messages
because it is not practical to have the system powered on all day long waiting for
the incoming messages. Now the problem can be solved by using this mainboard.
This mainboard can be triggered by a modem ring-in signal. When you have a
external modem installed, you can leave the PC system power off. Whenever there

VIA 82C693 MAINBOARD INSTALLATION
2-4
is the incoming message, the PC system will be triggered by the ring-in signal and
wake up automatically to receive the message for you. From now on, you can tell
your PC system to receive the fax message for you.
In order to use the ring-in signal to wake up your PC system, you will have to use
the EXTERNAL MODEM and have it connected to one of the SERIAL PORTS
( COMA or COM B ). When the system power is off, this mainboard will continue
to detect the serial port status. When it detects the ring-in signal from the serial
port, the system power will be turned on and start to receive the incoming messages
automatically. ( you need to have the software like Award Zero-Volt Data-Suspend
Utility so that you can use the fax utility to receive the incoming fax message ).
To enable the Modem Ring-In feature, you have to run the BIOS setup utility and
enable the “Resume by Ring or LAN” option (it is located in the “POWER
MANAGEMENT SETUP”, please refer to Section 4.7 for the settings). Having
completed the BIOS setup, you have to reboot the PC system so that BIOS can
verify the setting. (the “DMI pool data” will be verified by the BIOS when loading
the operating system). Simply speaking, shut down the PC system and then re-start
the system. The modem ring-in feature will be enabled when the operation system
has been loaded.
Note: This function is not available when using the internal MODEM card.
¨WAKE ON LAN ( WOL )
There is a WOL connector CN12 (see page 3-10) on the mainboard which is
designed to connect to the signal from a LAN card which supports the Wake On
LAN feature. When such LAN card is installed, you may turn on the PC system
from your remote server and monitor the PC status.
To enable this feature, you will have to use the BIOS setup utility to enable the
“Resume by Ring or LAN” (it is located at “POWER MANAGEMENT SETUP”,
please refer to Section 4.7 for the settings). Having completed the BIOS setup, you
have to reboot the PC system so that BIOS can verify the setting. ( the “DMI pool
data” will be verified by the BIOS when loading the operating system). Simply
speaking, reboot the PC system, the Wake On LAN feature will be enabled when the
operation system has been loaded
Note: This function will be disabled if you turn off the power before the system
can verify the DMI pool data.

VIA 82C693 MAINBOARD INSTALLATION
2-5
2.3 POWER OFF THE PC SYSTEM
There are two ways to power off the system. They are “Shut Down by Power Button”
and “ Shut Down by OS”. (such as Windows® 95 and Windows® 98, you can choose
the Shut Down from the file menu and the system will be powered off immediately ).

VIA 82C693 MAINBOARD HARDWARE SETUP
3-1
3. HARDWARE SETUP
Before you can start to install this mainboard, some hardware settings is required
to make sure it will work perfectly with the component which you are going to
install in your PC system. To configure the mainboard is a simple task, only a
few jumpers, connectors, cables and sockets needs to be selected and configured.
(For the locations of each component please refer to page 1-2 “ mainboard
layout” )
3.1 INSTALLATION OF CPU
When you have installed the Pentium™ II or Celeron™ processor onto the
mainboard, it will detect the CPU type and decide the CPU voltage
automatically. So you don’t have to make any jumper setting to select the CPU
voltage. All you have to do is use JP5, JP6 and JP7 to select the CPU clock ratio.
The socket where we are going to plug in the CPU is the slot type connector ( J1
). This slot is designed for Pentium ™ II or Celeron™ processors and we call
such new CPU socket – the SLOT 1.
Basically, Slot 1 is a new architecture and it is totally different to the traditional
Pentium CPU socket (Socket 7). Because the Slot 1 is a revolutionary new
architecture and the installation of Pentium™ II processor will need some
additional skill.
There are two types of Pentium ™ II CPU - the boxed Pentium™ II processor
and OEM Pentium™ II processor. These two different packages are different and
they have different accessories. So when installing different type of CPU, the
installation procedure will be different.
The boxed Pentium™ II processor is for retail purpose and it can be purchased
from the retail store. As for the OEM Pentium™ II processor, it is for OEM
customers like system integrators to build the PC systems. Sometimes, users will
find the OEM Pentium™ II processor sold in the retail store. When you are
purchasing the Pentium™ II or Celeron™ processor, please check with the CPU
dealer and find the appropriate information to install the processor.
Basically, the core logic of boxed Pentium™ II processor and OEM Pentium™ II

VIA 82C693 MAINBOARD HARDWARE SETUP
3-2
processor are identical, The major difference between these two processors is the
boxed CPU has head sink, cooling fan and heat sink supporter, while the OEM
Pentium™ II CPU doesn’t. As for the Celeron™ processor, it will need the
different mechanism to hold the CPU, please check with your CPU supplier for
the require materials.
3.2 INSTALLING THE DRAM MODULES
The 443BX chip integrates a main memory controller that supports a 64-bit
DRAM interface. The DRAM controller supports the following features:
1. DRAM type: Synchronous (SDRAM) DRAM.
2. Memory size: 8MB to 512MB.
3. Memory modules supported: Single and double density 3.3V DIMMs.
4. DRAM speed: 60ns for asynchronous and equivalent SDRAM 100/66
MHz parameters for synchronous memory.
This mainboard supports four 168-pin DIMM sockets (DIMM1, DIMM2,
DIMM3 and DIMM4), each DIMM can be single-bank or double-bank, 8MB up
to 512 MB of local memory can be populated on the board. Only the
Synchronous (SDRAM) memory is recommended because it will give a better
performance. (Both Symmetrical and Asymmetrical DRAM addressing are
supported.),.
This mainboard provides a DIMM plug-and-play support via Serial Presence
Detect (SPD) mechanism supported via the SMBus interface. In order to give the
best performance to the PC system, the DIMM module with SPD is strongly
recommended especially when installing the 100MHz processor to the board.
The SDRAM module with SPD is designed to increase the system performance
and make system more stable and compatible at the same time. When the system
BIOS detects the SPD DIMM module populated on the mainboard, the system
BIOS will retrieve the information (such as DRAM type, size, access timing ...
etc.) which is stored in the DIMM module. The system BIOS will then use such
information to determine what operating parameters will be used for individual
DIMM module automatically and gives the best performance and reliability to
your PC system.

VIA 82C693 MAINBOARD HARDWARE SETUP
3-3
If the system BIOS can not detect the SPD on the DIMM module. the system
BIOS will use the default parameters which is saved in the BIOS for the memory
subsystem. Such parameter will work with most DRAM modules, but it will
reduce the system performance because it is not optimized.
According to what Intel suggested, the system board shall stop and not to
continue when no SPD module can not be detected. However, this mainboard is
downgrade compatible with the 66HMz PentiumTM II processors. In order to
make sure that the system board will work normally with 66MHz PentiumTM II
processors, the system BIOS will continue to load the operation system when it
can not detect the SPD RAM module. Nevertheless, SRAM module with SPD
feature is still strongly recommended when you are using the 100MHz Pentium
IITM processor.
SPKR
BIOS
KBLOCK
CN14
DIMM 1 ( BANK0 + BANK1 )
DIMM 2 ( BANK2 + BANK3 )
DIMM 3 ( BANK4 + BANK5 )
DIMM 4 ( BANK6 + BANK7 )
Picture of DRAM subsystem
Picture of SPD DIMM module
In order to increase of the system performance, two suggestions are recommended
when you are installing the DIMM modules :

VIA 82C693 MAINBOARD HARDWARE SETUP
3-4
1. Always use the SDRAM module with SPD so that the PC system will have the
best performance.
2. Always install DIMM module starting from DIMM 1 socket first, and then
DIMM 2 and DIMM 3.
In the DRAM subsystem, the ECC feature can be used in the DRAM sub-system and
make sure there is no mistake on the data transmission (this feature can be selected in
the BIOS CMOS setup, please refer to Section 4.6 for the BIOS setting, the default
status is Non-ECC selected.) Before you enable the ECC checking feature, please make
sure that all DIMM modules have the true parity bit.
3.3 CONNECTORS
The connectors on the mainboard are either the pin header type or D-type
connectors, they are used to connect the accessories or peripheral devices (such as
power, mouse, printer,...etc.). Following is the connectors with its description and
pin assignment which is designed on the mainboard.
(A) BAT1: Battery Socket (Use the 3 Volts Lithium battery : CR2032)
SPKR
BIOS
KBLOCK
CN14
BAT1: Battery Socket
Pin# Pin name Pin# Pin name
+Battery Positive - Ground

VIA 82C693 MAINBOARD HARDWARE SETUP
3-5
(B) CN1: PS/2 Mouse and Keyboard Connector
SPKR
BIOS
KBLOCK
CN14
PS/2 Mouse Connector
PS/2 Keyboard Connector
Pin assignment of PS/2 mouse connector:
Pin # Signal name Pin # Signal name Pin # Signal name
1 Mouse Data 3 Ground 5 Mouse Clock
2 No Connection 4 + 5V DC 6 No Connection
Pin assignment of keyboard connector
Pin # Signal name Pin # Signal name Pin # Signal name
1 Keyboard Data 3 Ground 5 Keyboard Clock
2 No Connection 4 + 5V DC 6 No Connection

VIA 82C693 MAINBOARD HARDWARE SETUP
3-6
(C) CN2: USB Port (Universal Serial Bus) Connector
SPKR
BIOS
KBLOCK
CN14
USB 1
USB 2
Pin assignment of USB connector:
1 2 3 4
5 6
1 2 3 4
5 6
USB 1 USB 2 Pin1: +5VDC
Pin2: DATA-
Pin3: DATA+
Pin4: Ground
Pin5: Ground
Pin6: Ground

VIA 82C693 MAINBOARD HARDWARE SETUP
3-7
(D) CN3 & CN7 : COM A & COM B connector
SPKR
BIOS
KBLOCK
CN14
COM A COM B
Ping assignment of serial port connector:
1 6 Pin#
Signal name Pin # Signal name
 1 DCD (Data Carrier Detect) 6 DSR (Data Set Ready)
 2 RD (Received Data) 7 RTS (Request To Send)
 3 TD (Transmit Data) 8 CTS (Clear To Send)
 4 DTR (Data Terminal Ready) 9 RI (Ring Indicator)
5 Ground
5 9
I/O address 3F8H/2F8H/3E8H/2E8H, IRQ3/IRQ4, selected by CMOS setup.
(E) CN4: ATX Power Connector
SPKR
BIOS
KBLOCK
CN14
ATX Power connector