Nvidia 680I LT SLI, 680I SLI User Manual
nForce 680i SLI/
nForce 680i LT SLI
Copyright
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Trademark
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Disclaimer
We make no warranty of any kind with regard to the content of this user’s manual. The content
is subject to change without notice and we will not be responsible for any mistakes found in
this user’s manual. All the brand and product names are trademarks of their respective
companies.
FCC Compliance Statement
This equipment has been tested and found to comply with the limits of a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense. However, there is no guarantee
that interference will not occur in a particular installation.
CE Mark
The device is in accordance with 89/336 ECC-ENC Directive.
Ver: EG101
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
nForce 680i SLI/
nForce 680i LT SLI
Intel
®
Core
nVIDIA® nForce 680i SLI MCPs/
nForce 680i LT SLI MCPs
Support Socket 775
TM
2 Extreme/ Core
Pentium
Pentium
User Manual
Dimensions (ATX form-factor):
244mm x 305mm ( W x L )
Operating System:
Windows® Vista/ Windows® XP
TM
®
Extreme Edition/
®
2 Quad/ Core
Processors
TM
2 Duo/
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Things You Have To Know
The images and pictures in this manual are for reference only and may vary
from the product you received depending on specific hardware models, third
party components and software versions.
This mainboard contains very delicate IC chips. Always use a grounded
wrist strap when working with the system.
Do not touch any IC chip, lead, connector or other components.
Always unplug the AC power when you install or remove any device on the
mainboard or when confuguring pins and switches.
Packing List
nForce 680i SLI/ nForce 680i LT SLI Mainboard
I/O Shield
IDE Cable
SATA Cable
SLI Bridge
1394 Cable (Optional)
Cooling Fan (nForce 680i SLI only)
Mainboard Driver & User Manual CD
Mainboard Quick Installation Guide
Symbols
Attention- Important Information
Follow the procedures below…
Troubleshooting Tips
Refer to other sections in this manual…
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Table of Contents
CHAPTER 1. GETTING STARTED ....................................................1
INTRODUCTION.......................................................................................................1
SPECIFICATION .......................................................................................................2
CONFIGURATION .................................................................................................... 5
Layout of nForce 680i SLI .............................................................................. 5
Layout of nForce 680i LT SLI......................................................................... 6
HARDWARE INSTALLATION ................................................................................... 7
CPU Processor Installation.............................................................................. 7
Memory Installation: DIMM0/1/2/3................................................................8
Back Panel Configuration.............................................................................. 10
Connectors.....................................................................................................13
Front Panel Headers: FRONTPNL................................................................14
EZ Control Button .........................................................................................15
Headers & Jumpers........................................................................................15
Audio Configuration...................................................................................... 17
Slots ............................................................................................................... 17
Power Supply Attachments............................................................................ 18
CHAPTER 2. BIOS SETUP ........................................................... 20
INTRODUCTION..................................................................................................... 20
MAIN MENU .........................................................................................................21
CHAPTER 3: SOFTWARE SETUP................................................... 23
SOFTWARE LIST ................................................................................................... 23
SOFTWARE INSTALLATION ................................................................................... 23
CHAPTER 4: TROUBLESHOOTING................................................. 27
APPENDIX I: 8/6/4/2 CHANNEL AUDIO EFFECT SETUP.........................................30
APPENDIX II: RAID SETUP...................................................................................32
APPENDIX III: SLI (SCALABLE LINK INTERFACE) SETUP ....................................70
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Chapter 1. Getting Started
Introduction
Thanks for choosing nForce 680i SLI/ nForce 680i LT SLI mainboards. They are based on
®
nVIDIA
SLI/ nForce 680i LT SLI support Intel
Pentium
nForce 680i SLI/ 680i LT SLI Northbridge and Southbridge chipsets. The nForce 680i
®
1333 MHz/ 1066 MHz/ 800 MHz.
The nForce 680i SLI/ nForce 680i LT SLI provide four DIMM (Dual In-Line Memory Modules)
sockets allowing you to install 240-pin, unbuffered non-ECC, DDRII 800/ 667/ 533 SDRAMs.
They also support Dual Channel Technology and allow you installing a total memory capacity
of 8 GB.
These mainboards provide two PCI-E x16 slots which can be used with two identical
SLI-ready PCI-Express graphics cards, enabling SLI Technology and significantly increasing
graphics performance <See Appendix III>. Furthermore, the nForce 680i SLI also provides
one PCI-E x8 slot for use with a graphics card. There are two PCI-E x1 slots provided for use
with PCI-E x1 compatible expansion cards. Two standard PCI slots for use with standard PCI
expansion cards are also allowed.
The nForce 680i SLI/ nForce 680i LT SLI provide one floppy disk drive connector that can be
used with 360KB/720KB/ 1.2MB/1.44MB/2.88MB drives. There is also one IDE connector for
connecting two IDE hard drives supporting Ultra ATA 33/66/100/133. Moreover, these
mainboards come with Serial ATA II feature, six SATA II connectors which the interfaces can
provide the transmit rate up to 3 Gbps and also support RAID 0/ 1/ 0+1/ 5 JBOD mode <See
Appendix II>
The onboard High Definition Audio CODEC (ALC885) supports 8/6/4/2 channel audio play
<See Appendix I>. These mainboards also support the Sony/Philips Digital Interfaces (SPDIF)
output function.
The nForce 680i SLI also comes with two onboard 10/100/1000 Mbps Ethernet LAN chips.
There are dual LAN ports on the back panel of your case that you can directly plug into an
Internet cable. The nForce 680i LT SLI only provides one 10/100/1000 LAN port.
There are maximal ten USB2.0/ 1.1 ports which can be set up on the nForce 680i SLI
mainboard. Eight USB2.0/ 1.1 ports are available on the nForce 680i LT SLI mainboard.
All the information (including hardware installation and software installation) in this manual are
for reference only. The contents in this manual may be updated without notice. The company
will not assume any responsibility for any errors or mistakes within.
®
CoreTM 2 Extreme/ CoreTM 2 Quad/ CoreTM 2 Duo/
Extreme Edition/ Pentium® Processors with FSB (Front Side Bus) frequencies up to
1
Specification
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
CPU
Support Socket 775
Support Intel® CoreTM 2 Extreme/ CoreTM 2 Quad/ CoreTM 2 Duo/ Pentium® Extreme
Edition/ Pentium
®
Processors
Support Hyper-Threading Technology
Support 1333 MHz/ 1066 MHz/ 800 MHz/ 533 MHz FSB (Front Side Bus) Frequencies
Chipset
Northbridge Chipset – nVIDIA® nForce 680i SLI SPP/ 680i LT SLI SPP
Southbridge Chipset – nVIDIA® nForce 680i SLI MCP/ 680i LT SLI MCP
I/O Controller – Winbond® W83627DHG
High Definition Audio Codec – Realtek® ALC885
LAN Controller – Marvell® 88E1116
IEEE1394 Controller – TI® TSB43AB22A
Memory
Four DIMM sockets
Supports unbuffered & non-ECC DDRII 800/ 667/ 533 SDRAM
Supports a total memory capacity of up to 8 GB
Supports Dual Channel data bus
Onboard HD Audio CODEC (ALC885)
High performance CODEC with high S/N ratio (>100 db)
Compatible with Azalia 1.0 specification
Supports 8/6/4/2 channel playback capability
Supports jack sensing and re-tasking function
Microphone AEC, NS, and BF technology for voice application
Supports Sony/ Philips Digital Interfaces (S/PDIF) functionality
2
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Slots
Five PCI-Express interface slots for graphics cards and expansion cards
1. Two PCI-E x16 slots: supports x16 mode for true dual-graphics SLI configurations
2. One PCI-E x8 slot: supports x8 mode for future GPU physics applications nForce
680i SLI only
3. Two PCI-E x1 slots: supports up to x1 mode with 250 MB/s one-way bandwidth
Two PCI interface slots for expansion cards
FDD Connector
Supports one FDD connector to set up to two floppy disk drives
Supports 360KB/ 720KB/ 1.2MB/ 1.44MB/ 2.88MB
IDE Connector
One IDE connector
Supports up to two IDE devices
Supports Ultra ATA 33/66/100/133
Supports high capacity hard disk drives
Serial ATA II Connectors
Six SATA II connectors
Supports SATA 2.0 specification with data transfer rate up to 3 Gbps
One SATA II connector can only support one SATA II HDD
Onboard LAN Chip
Supports Dual LAN nForce 680i SLI only
Supports 10/100/1000 Mbps Ethernet LAN
I/O facility Connectors
Supports one PS/2 mouse port and one PS/2 keyboard port
Supports one IEEE1394 port on back panel
Supports one SPDIF OUT port on back panel
Supports one serial port (COM1) header and one IEEE1394 header with external
device connected
3
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Universal Serial Bus
Six onboard USB 2.0/ 1.1 ports nForce 680i SLI only
Two front USB headers come with this mainboard for additional four USB ports
Support a maximum of ten USB ports to connect USB compatible devices
nForce 680i SLI only
BIOS
Phoenix-Award™ BIOS
Support APM 1.2
Support ACPI 2.0 power management
Green Function
Supports ACPI (Advanced Configuration and Power Interface)
Supports Phoenix-Award™ BIOS power management function
Supports S0 (normal), S1 (power on suspend), S3 (suspend to RAM), S4 (suspend to
disk – depends on OS), and S5 (soft – off).
Shadow RAM
Integrated memory controller provides shadow RAM functionality and supports ROM
BIOS
Flash Memory
Supports flash memory functionality
Supports ESCD functionality
Hardware Monitor Function
Monitors CPU/ Northbridge/ Chassis Fan Speed
Monitors CPU temperature
Monitors CPU/ Memory/ System voltages
4
Configuration
Layout of nForce 680i SLI
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
5
Layout of nForce 680i LT SLI
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
6
Mainboard nForce 680i SLI/
A
p
Mainboard nForce 680i LT SLI
Hardware Installation
This section will assist you in quickly installing your system hardware. Wear a wrist ground
strap before handling components. Electrostatic discharge may damage the system’s
components.
CPU Processor Installation
These mainboards support Intel® CoreTM 2 Extreme/ CoreTM 2 Quad/ CoreTM 2 Duo/ Pentium®
Extreme Edition/ Pentium
®
Processors using a Socket 775. Before building your system, we
suggest you to visit the Intel website and review the processor installation procedures.
http://www.intel.com
CPU Socket 775 Configuration Steps:
1. Locate the CPU socket 775 on
your mainboard and nudge the
lever away from the socket as
shown. Then lift the lever to a
140-degree angle (A). Next, lift up
the iron cover (B).
2. There are 2 distinctive marks
located near the corners of the
socket on the same side as the
lever as shown (C). Match these
marks with the marks on the CPU
and carefully lower the CPU down
onto the socket (D).
3. Replace the iron cover and then
lower the lever until it snaps back
into position (E). This will lock
down the CPU (F).
4. Smear thermal grease on the top of the CPU. Lower the
CPU fan onto the CPU/CPU socket and secure it using the
attachments or screws provided on the fan. Finally, attach
the fan power cord to the CPUFAN header.
ttention
DO NOT touch the CPU pins in case they are damaged. Also, make sure
that you have completed all installation steps before powered on the
system. Finally, double-check that the cooling fan is properly installed and
the CPU fan power cord is securely attached, in case your CPU and other
sensitive com
onents are damaged because of high temperatures.
7
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
FAN Headers: CPU FAN, NFORCE FAN
There are several fan headers available for cooling fans on the mainboard. Here describes the
two important ones only. The cooling fans play an important role in maintaining ambient
temperatures in your system. The CPUFAN header is attached with a CPU cooling fan. The
NFORCE FAN header is attached with the nForce SPP fan.
Pin Assignment
1 Control
2 Sense
1
CPU FAN
1
NFORCE FAN
Memory Installation: DIMM0/1/2/3
The nForce 680i SLI/ nForce 680i LT SLI mainboards provide four DIMM (Dual In-Line
Memory Modules) sockets which allow you to install 240-pin, unbuffered non-ECC, DDRII 800/
667/ 533 SDRAMs. They also support Dual Channel Technology and allow you to install a
total memory capacity of 8 GB.
DIMM on the nForce 680i SLI
Attention
It is recommended that to install memories which are identical
specifications (same timing specifications and same DDR II
speed) to achieve the best effects. It may cause the failure of
power-on or lower memory speed if installing different type,
3 PWR
4
GND
Pin Assignment
1 Sense
2 +12V
3
GND
8
DIMM on the nForce 680i LT SLI
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
How to enable Dual-Channel DDRII:
1. These mainboards provide Dual-Channel functionality for the four DIMM sockets.
Enabling Dual-Channel will significantly increase your data access rate than the before.
DIMM0 and DIMM1 share one channel, and DIMM2 and DIMM3 share another channel.
2. To enable Dual-Channel, you need to install memories in different channels of DIMM
sockets. According to the definition by Intel, once one channel of the memory capacity is
the same with the other channel, the Dual-Channel will be enabled then.
For example, if you install one 256 MB memory in DIMM0 and another in DIMM1 (256MB x 2
= 512MB), you must install a total of 512 MB memory in DIMM2 or DIMM3, so that the
Dual-Channel can be enabled.
3. If you only need to install one memory, it is recommended to install it in DIMM0 or DIMM1.
Memory Installation Steps:
1. Pull the white plastic tabs at both ends of the slot away from the slot.
2. Match the notch on the RAM module with the corresponding pattern in the DIMM slot.
This will ensure that the module will be inserted with the proper orientation.
9
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
3. Lower the RAM module into the DIMM Slot and press firmly using both thumbs until the
module snaps into place.
4. Repeat steps 1, 2 & 3 for the remaining RAM modules.
Back Panel Configuration
Back Panel of the nForce 680i SLI
The pictures above are for reference only. Your actual
installation may vary slightly from the pictures.
10
Back Panel of the nForce 680i LT SLI
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
PS/2 Mouse & PS/2 Keyboard Ports: KB/MS
These mainboards provide a standard PS/2 mouse port and a PS/2 keyboard port.
S/PDIF OUT Port: SPDIF Out
The S/PDIF output is capable of providing digital audio to external speakers or compressed
AC3 data to an external Dolby digital decoder. Use this feature only when your stereo system
has digital input function.
IEEE1394 Port: IEEE1394
There is one IEEE1394 port on the back panel of your case that allows you to attach
compatible device is also available.
USB Ports/LAN Ports: USB1, USB/LAN1, USB/LAN2
There are six onboard USB 2.0/ 1.1 ports on the back panel. These USB ports are used to
attach with USB devices, such as keyboard, mice and other USB supported devices. There
are also dual 10/100/1000 Mbps Ethernet LAN ports available for you to attach an Internet
cable. 《nForce 680i LT SLI supports four onboard USB 2.0/1.1 ports and one LAN
port.》
11
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Audio Ports: SOUND
This mainboard provides six HD Audio ports for 8/6/4/2 channel playback capability. With jack
sensing, auto detecting and adjusting, the device will make it easier to Plug and Play for you.
Line-In (blue)
This port is for audio input and connects to external audio devices such as CD player, tape
player or other audio devices when the 8/6/4/2 channel audio effects driver is enabled.
Line-Out/Front Speaker-out (green)
This port is an output audio port used for connecting to speakers or a headset. A dual channel
audio system is to provide basic audio functionality. When the 8/6/4/2 channel audio system is
enabled, this port will output audio for the front speakers.
Mic-In (pink)
This port is for connecting to a microphone. When the 8/6/4/2 channel audio system is
enabled, this port will be the input of your microphone.
Center/ Subwoofer（orange）
This port connects with the center/ subwoofer speakers. It will be functional when the 8/6
channel audio system is driven for center/ subwoofer output.
Rear Speaker Out（black）
This port is only functional for the output of the surround sound rear speakers when the 8/6/4/2
channel audio driver is installed and enabled.
Side Speaker Out（gray）
This port will be effective for the output of side surround speakers when the 8 channel audio
system is set.
This mainboard supports multi-channel audio system which allows you to
transform your 2 speaker audio system into 8/ 6/ 4 speaker audio system.
See Appendix I for more information.
12
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Connectors
Floppy Disk Drive Connector: FLOPPY
These mainboards provide a standard floppy disk drive connector (FDD) that supports 360KB/
720KB/ 1.2MB/ 1.44MB/ 2.88 MB floppy disk drives using a FDD ribbon cable.
Hard Disk Drive Connectors: IDE
These mainboards provide one IDE connector that supports Ultra ATA 33/66/100/133 IDE
devices. You can attach a maximum of two IDE devices, such as hard disk drive (HDD),
CD-ROM, DVD-ROM, etc. using an IDE ribbon cable.
In general, two IDE devices can be attached onto one IDE connector. If you attach two IDE
HDDs, you must configure one drive as the master and the other one as the slave. In this case,
one optical device i.e., CD-ROM, DVD-ROM…etc. should be attached to this connector as
well.
SATA II Connector: SATA A0/A1/B0/B1/C0/C1
The six SATA II connectors support 3 Gbps transmit rate, and one SATA connector only can
attach one SATA HDD of each time using SATA cables.
SATA A0/ A1/ B0/
B1/ C0/ C1
This mainboard supports RAID 0/ 1/ 0+1/ 5/ JBOD mode; refer
Appendix II for more information.
Pin Assignment Pin Assignment
1 GND 2 TX+
1
3 TX- 4 GND
5RX+ 6 RX-
7 GND
Attention
The FDD/ IDE cable is designed and should be attached with a
specific direction. One edge of the cable will usually in color such
as red, to indicate that should line up with the header pin-1.
13
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Front Panel Headers: FRONTPNL
Pin Assignment Function Pin Assignment Function
1 HD_PWR (+) 2 HDR_BLNK_GRN
3 HAD#
5 GND 6 SWITCH_ON#
7 FP_RESET#
9 N/C 10 Key
Hard Disk LED Header (Orange): HD_LED
If your case front panel has a hard drive LED cable, attach it to this header. The LED will
flicker when there is hard disk drive activity.
Reset Switch Header (Blue): RESET
This header can be attached to a momentary SPST switch (reset button) cable on your case
front panel. The switch is normally left open. When the switch closed, it will cause the
mainboard to reset and run the POST (Power-On Self Test).
Power LED Header (Green): PWRLED
These mainboards provide a 2-pin power LED header. If there is a 2-pin power LED cord on
your case front panel, you can attach it to the 2-pin power LED header. Then the power LED
will illuminate while the system is powered on.
Power Switch Header (Red): PWRSW
This header can be attached to a power switch cable on your case front panel. You can turn
your system on or off by pressing the button attached to this power switch cable.
Hard Disk LED
(HD_LED)
Reset Switch
(RESET)
FRONTPNL
4 HDR_BLNK_YEL
8 GND
Front Panel Light
(PWRLED)
Power Switch
(PWRSW)
14
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
EZ Control Button
Onboard Buttons: POWER, RESET
These mainboard provide one Power Switch and one Reset Switch
buttons for your convenience to turn on or restart your system. If
pressing one of them, then you can start your computer easily before
the mainboard is set into the case.
Headers & Jumpers
Case Open Warning Header: CASE OPEN
This header is used to warn the user when the computer case has been
previously opened. Please connect the header with a cable to your case
directly. (Make sure that your computer case provides this “case open”
cable.)
Serial Interface Header: COM1
These mainboards provide one COM1 header for you to connect an
external serial connector on the back panel of your case. Attaching the
serial connector by a cable (Optional) onto this header, then you can
use the serial connector to attach with a mic, modem or other
peripheral device.
Front USB Headers: USB6/7, USB8/9
These mainboards provide six (or four) onboard USB 1.1/2.0 ports on the back panel that
attach to USB devices. There are two additional USB headers that can be connected by
cables to four more USB ports on the front panel of your case giving you a possible ten (or
eight) USB ports. 《nForce 680i LT SLI supports four onboard USB 2.0/1.1 ports on
the back panel.》
USB6/7/8/9
Attention
If you are using a USB 2.0 device with Windows® XP, you will need to
install the USB 2.0 driver from the Microsoft
Service pack 1 (or higher) for Windows
driver.
Pin Assignment Pin Assignment
1 5V_Dual 2 5V_Dual
3 D- 4 D-
5 D+ 6 D+
7 GND 8 GND
9 Key 10 N/C
®
website. If you are using
XP, you will not have to install the
CASE OPEN
COM1
15
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
IEEE1394 Header: IEEE1394
These mainboards provide one onboard IEEE1394 port on the back panel of your case. One
additional IEEE1394 header on the mainboard for one more port on the front panel is allowed.
Please connect the header by a cable for use with compatible devices.
Pin Assignment Pin Assignment
1 TPA+ 2 TPA3 GND 4 GND
IEEE1394
Clear CMOS Jumper: CLR_CMOS
5 TPB+ 6 TPB7 +12V 8 +12V
9 Key 10 GND
The “Clear CMOS” function is used when you are unable boot your system and need to reset
the BIOS settings (CMOS settings) back to the manufacturer’s original settings. This is also a
way to reset the system password if you have forgotten it.
CLR_CMOS Assignment
Pin 1-2 Closed
Pin 2-3 Closed
Note: Close stands for putting a jumper cap onto two header pins.
The following steps explain how to reset your CMOS
configurations when you forgot a system password.
1. Turn off your system and disconnect the AC power cable.
Clear CMOS Data
Normal (Default)
2. Set CLR_CMOS header to OFF (1-2 Closed).
3. Wait several seconds.
4. Set CLR_CMOS header to ON (2-3 closed).
5. Connect the AC power cable and turn on your system.
6. Reset your new password.
16
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Audio Configuration
Front Audio Header: FP AUDIO
The audio header supports High Definition Audio standard and provides two kinds of audio
output choices, the Front Audio and the Rear Audio. The front audio supports re-tasking
function.
Slots
PCI-Express x16 Interface slot: PCIE x16_1/ PCIE x16_2
These mainboards provide two PCI-Express x16 slots which support one-way bandwidth up to
4 GB/s. They are also allowed to install two identical SLI-ready PCI-Express graphics cards to
enable SLI Technology for better graphics performance.
Pin Assignment Pin Assignment
PORT1_L
1
PORT1_R
3
PORT2_R
5
SENSE_SEND
7
PORT2_L
9
FP AUDIO
2
4
6
8
10
AUD_GND
PRECENCE_J
SENSE1_RETURN
Key
SENSE2_RETURN
PCI-Express x8 Interface slot: PCIE x16_3 nForce 680i SLI only
The nForce 680i SLI allows you to install an external graphics card, which the PCI-Express x8
interface, supporting one-way bandwidth up to 2 GB/s, is compatible to this PCIE x16_3 slot.
17
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
PCI-Express x1 Interface slots: PCIE x1_1/ PCIE x1_2
The PCIE x1_1/ PCIE x1_2 slots are the PCI-Express x1 interface slots which can be
supported up to x1 mode. You can insert expansion cards which are PCI-E x1 compatible onto
these slots.
PCI Interface Slots: PCI1/2
PCI stands for Peripheral Component Interconnect, which is a bus standard for installing
expansion cards such as network card, SCSI card, etc. to these PCI slots.
Power Supply Attachments
Auxiliary Power for Graphics: AUX PWR
The 4-pin connector is an auxiliary power connection for graphics card. Exclusive power for
the graphics card provides better graphics performance.
Pin Assignment Pin Assignment
+5V
1
GND
3
AUX PWR
2
4
GND
+12V
18
Mainboard nForce 680i SLI/
A
Mainboard nForce 680i LT SLI
ATX Power Connector: ATXPWR, ATX12V
This mainboard provides two ATX power connectors, a 24-pin ATXPWR connector and an
8-pin ATX12V connector. You must use a power supply that has both of these connectors and
both connectors must be attached before the system is powered on. These power connectors
support several power management functions such as the instant power-on function. The
connector pins are described below.
Pin Assignment Pin Assignment
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 PWROK 20 RSVD
9 +5V_AUX 21 +5V
10 +12V 22 +5V
ATXPWR
11 +12V 23 +5V
12 +3.3V 24 GND
Pin Assignment Pin Assignment
1 GND 5 +12V
2 GND 6 +12V
3 GND 7 +12V
ATX12V
ttention
In general, power cords are designed and should be attached with a
specific direction. The black wire of the power cord is Ground and
should be attached onto the header location of Ground.
4 GND 8 +12V
19
Mainboard nForce 680i SLI/
Mainboard nForce 680i LT SLI
Chapter 2. BIOS Setup
Introduction
This section describes PHOENIX-AWARD™ BIOS Setup program which resides in the BIOS firmware.
The Setup program allows users to modify the basic system configuration. The configuration information is
then saved to CMOS RAM where the data is sustained by battery after power-down.
The BIOS provides critical low-level support for standard devices such as disk drives, serial ports and
parallel ports. As well, the BIOS controls the first stage of the boot process, loading and executing the
operating system.
The PHOENIX-AWARDTM BIOS installed in your computer system’s ROM is a custom version of an
industry standard BIOS. This means that it supports the BIOS of Intel
This version of the PHOENIX-AWARDTM BIOS includes additional features such as virus and password
protection as well as special configurations for fine-tuning the system chipset. The defaults for the BIOS
values contained in this document may vary slightly with the version installed in your system.
Key Function
In general, you can use the arrow keys to highlight options, press <Enter> to select, use the
<PgUp> and <PgDn> keys to change entries, press <F1> for help and press <Esc> to quit.
The following table provides more detail about how to navigate within the BIOS Setup
program.
Keystroke Function
Up arrow Move to previous option
Down arrow Move to next option
Left arrow Move to the option on the left (menu bar)
Right arrow Move to the option on the right (menu bar)
Esc Main Menu: Quit without saving changes
Move Enter Move to the option you desire
PgUp key Increase the numeric value or enter changes
PgDn key Decrease the numeric value or enter changes
+ Key Increase the numeric value or enter changes
- Key Decrease the numeric value or enter changes
Esc key Main Menu – Quit and do not save changes into CMOS
F1 key General help on Setup navigation keys
F5 key Load previous values from CMOS
F7 key Load the defaults from BIOS default table
F10 key Save all the CMOS changes and exit
Submenus: Exit Current page to the next higher level menu
Status Page Setup Menu and Option Page Setup Menu – Exit
Current page and return to Main Menu
®
based processors.
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