The motherboard contains numerous delicate electronic circuits and components which can
become damaged as a result of electrostatic discharge (ESD). Thus, prior to installation, please
follow the instructions below:
1. Please turn off the computer and unplug its power cord.
2. When handling the motherboard, avoid touching any metal leads or connectors.
3. It is best to wear an electrostatic discharge (ESD) cuff when handling electronic components
(CPU, RAM).
4. Prior to installing the electronic components, please have these items on top of an antistatic pad or
within a electrostatic shielding container.
5. Please verify that the power supply is switched off before unplugging the power supply connector
from the motherboard.
Installation Notices
1. Prior to installation, please do not remove the stickers on the motherboard. These stickers are required
for warranty validation.
2. Prior to the installation of the motherboard or any hardware, please first carefully read the information
in the provided manual.
3. Before using the product, please verify that all cables and power connectors are connected.
4. To prevent damage to the motherboard, please do not allow screws to come in contact with the
motherboard circuit or its components.
5. Please make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
6. Please do not place the computer system on an uneven surface.
7. Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
8. If you are uncertain about any installation steps or have a problem related to the use of the product,
please consult a certified computer technician.
English
Instances of Non-Warranty
1. Damage due to natural disaster, accident or human cause.
2. Damage as a result of violating the conditions recommended in the user manual.
3. Damage due to improper installation.
4. Damage due to use of uncertified components.
5. Damage due to use exceeding the permitted parameters.
6. Product determined to be an unofficial Gigabyte product.
Internal Connectors 1 24-pin ATX power connector
1 8-pin ATX 12V power connector
1 floppy connector
2 IDE connectors
4 SATA 3Gb/s connectors
1 CPU fan connector
1 system fan connector
1 North Bridge fan connector
1 power fan connector
1 front panel connector
1 front audio connector
1 CD In connector
1 S/PDIF In connector
2 USB 2.0/1.1 connectors for additional 4 ports by cables
2 IEEE 1394a connectors for additional 2 ports by cables
1 power LED connector
1 Chassis Intrusion connector
(Note 1)
GA-N650SLI-DS4 Motherboard- 10 -
Rear Panel I/O 1 PS/2 keyboard port
1 PS/2 mouse port
1 S/PDIF Out connection (coaxial+optical)
1 parallel port
1 serial port
4 USB 2.0/1.1 ports
1 IEEE 1394a port
1 RJ-45 port
6 audio jacks (Line In / Line Out / MIC In/Surround Speaker Out (Rear
Speaker Out)/Center/Subwoofer Speaker Out/Side Speaker Out)
I/O Control IT8718 chip
Hardware Monitor System voltage detection
CPU/System temperature detection
CPU/System/Power fan speed detection
CPU warning temperature
CPU/System/Power fan failure warning
CPU/System Smart Fan Control
BIOS 2 4 Mbit flash ROM
Use of licensed AWARD BIOS
Supports Dual BIOS
PnP 1.0a, DMI 2.0, SM BIOS 2.3, ACPI 1.0b
Bundle Software Norton Internet Security (OEM revision)
Form Factor ATX form factor; 30.5cm x 24.4cm
(Note 3)
English
(Note 1) Due to the limitation of Windows 32-bit operating system, when more than 4 GB of physical
memory is installed, the actual memory available for the operating system will be less than
4 GB; Windows 64-bit operating system doesn't have such limitation.
(Note 2) In SLI Mode, the two PCIE x16 slots can run at up to x8 respectively. In Normal Mode,
only the first PCIE x 16 slot (PCIE_16_1) is available and can run at up to x16.
(Note 3) EasyTune functions may vary depending on different motherboards.
Hardware Installation- 11 -
English
1-3Installation of the CPU and CPU Cooler
Before installing the CPU, please comply with the following conditions:
1. Please make sure that the motherboard supports the CPU.
2. Please take note of the one indented corner of the CPU. If you install the CPU in the wrong
direction, the CPU will not insert properly. If this occurs, please change the insert direction
of the CPU.
3. Please add an even layer of heat paste between the CPU and CPU cooler.
4. Please make sure the CPU cooler is installed on the CPU prior to system use,
otherwise overheating and permanent damage of the CPU may occur.
5. Please set the CPU host frequency in accordance with the CPU specifications. It is not
recommended that the system bus frequency be set beyond hardware specifications
since it does not meet the required standards for the peripherals. If you wish to set
the frequency beyond the proper specifications, please do so according to your hardware specifications including the CPU, graphics card, memory, hard drive, etc.
HT functionality requirement content :
Enabling the functionality of Hyper-Threading Technology for your computer system requires all
of the following platform components:
- CPU: An Intel® Pentium 4 CPU with HT Technology
- Chipset: A chipset that supports HT Technology
- BIOS: A BIOS that supports HT Technology and has it enabled
- OS: An operation system that has optimizations for HT Technology
1-3-1 Installation of the CPU
Metal Lever
Fig. 1
Gently lift the metal
lever located on the
CPU socket to the
upright position.
Fig. 2
Remove the plastic
covering on the CPU
socket.
Fig. 3
Notice the small gold
colored triangle located
on the edge of the CPU
socket. Align the
indented corner of the
CPU with the triangle and gently insert the CPU into
position. (Grasping the CPU firmly between your
thumb and forefinger, carefully place it into the socket
in a straight and downwards motion. Avoid twisting or
bending motions that might cause damage to the CPU
during installation.)
GA-N650SLI-DS4 Motherboard- 12 -
Fig. 4
Once the CPU is
properly inserted,
please replace the
load plate and push the
metal lever back into
its original position.
1-3-2 Installation of the CPU Cooler
English
Male Push Pin
The top of Female Push Pin
Female Push Pin
Fig.1
Please apply an even layer of heat paste on the
surface of the installed CPU.
Fig. 3
Place the CPU cooler atop the CPU and make
sure the push pins aim to the pin hole on the
motherboard.Pressing down the push pins
diagonally.
Fig. 5
Please check the back of motherboard after
installing. If the push pin is inserted as the picture,
the installation is complete.
Fig. 2
(Turning the push pin along the direction of arrow is to
remove the CPU cooler, on the contrary, is to install.)
Please note the direction of arrow sign on the male
push pin doesn't face inwards before installation. (This
instruction is only for Intel boxed fan)
Fig. 4
Please make sure the Male and Female push pin
are joined closely. (for detailed installation
instructions, please refer to the CPU cooler installation section of the user manual)
Fig. 6
Finally, please attach the power connector of the
CPU cooler to the CPU fan header located on the
motherboard.
The CPU cooler may adhere to the CPU as a result of hardening of the heat paste.To prevent
such an occurrence, it is suggested that either thermal tape rather than heat paste be used for
heat dissipation or using extreme care when removing the CPU cooler.
Hardware Installation- 13 -
English
1-4Installation of Memory
Before installing the memory modules, please comply with the following conditions:
1. Please make sure that the memory used is supported by the motherboard. It is
recommended that memory of similar capacity, specifications and brand be used.
2. Before installing or removing memory modules, please make sure that the computer
power is switched off to prevent hardware damage.
3. Memory modules have a foolproof insertion design. A memory module can be installed
in only one direction. If you are unable to insert the module, please switch the direction.
The motherboard supports DDRII memory modules, whereby BIOS will automatically detect memory
capacity and specifications. Memory modules are designed so that they can be inserted only in one direction.
The memory capacity used can differ with each slot.
Notch
DDRII
Fig.1
The DIMM socket has a notch, so the DIMM memory module can only fit in one direction. Insert the DIMM memory
module vertically into the DIMM socket. Then push it down.
Fig.2
Close the plastic clip at both edges of the DIMM sockets to
lock the DIMM module.
Reverse the installation steps when you wish to remove
the DIMM module.
GA-N650SLI-DS4 Motherboard- 14 -
Dual Channel Memory Configuration
The GA-N650SLI-DS4 supports the Dual Channel Technology. After operating the Dual Channel Technology, the bandwidth of memory bus will double.
The GA-N650SLI-DS4 includes 4 DIMM sockets, and each Channel has two
If you want to operate the Dual Channel Technology, please note the following explanations
due to the limitation of Intel chipset specifications.
1. Dual Channel mode will not be enabled if only one DDRII memory module is installed.
2. To enable Dual Channel mode with two or four memory modules (it is recommended to
use memory modules of identical brand, size, chips, and speed), you must install them
into DIMM sockets of the same color.
The following is a Dual Channel Memory configuration table: (DS: Double Side, SS: Single Side,
X:Empty)
DDR II 1DDR II 2DDR II 3DDR II 4
2 memory modules
4 memory modules
DS/SSXDS/SSX
XDS/SSXDS/SS
DS/SSDS/SSDS/SSDS/SS
English
Hardware Installation- 15 -
English
1-5Installation of Expansion Cards
You can install your expansion card by following the steps outlined below:
1. Read the related expansion card's instruction document before install the expansion card into the
computer.
2. Remove your computer's chassis cover, screws and slot bracket from the computer.
3. Press the expansion card firmly into expansion slot in motherboard.
4. Be sure the metal contacts on the card are indeed seated in the slot.
5. Replace the screw to secure the slot bracket of the expansion card.
6. Replace your computer's chassis cover.
7. Power on the computer, if necessary, setup BIOS utility of expansion card from BIOS.
8. Install related driver from the operating system.
Installing a PCI Express x16 expansion card:
Please carefully pull out the small whitedrawable bar at the end of the PCI Express x16 slot when you try to install/
uninstall the VGA card. Please align the
VGA card to the onboard PCI Express
x16 slot and press firmly down on the
slot. Make sure your VGA card is locked
by the small white-drawable bar.
GA-N650SLI-DS4 Motherboard- 16 -
To install a VGA card or to release an
installed card, users can also press the
latch on the back of the drawable bar as
the picture to the left shows.
1-6Setup of an SLI (Scalable Link Interface) Configuration
The nVIDIA® nForce 650i SLI chipset offers blistering graphics performance with the ability to bridge two
nVIDIA® SLI-ready PCI ExpressTM graphics cards! The SLI design takes advantage of the increased
bandwidth of the PCI ExpressTM bus architecture, features hardware and software innovations within
nVIDIA® GPU (graphics processing unit) and the nVIDIA® nForce 650i SLIchipset. Together, the nVIDIA
SLI technologies work seamlessly to allow two graphics cards to operate in parallel and share the work
and deliver heart-pounding PC performance. This section introduces steps to configure an SLI system
on the GA-N650SLI-DS4 motherboard.
Before You Begin--
I. Understanding the components:
The SLI bridge connector
The SLI bridge connector is used to bridge two SLI-capable graphics
cards to enable SLI operation.
The SLI switch module
Normal Mode (default): In Normal Mode, the first PCIe x16 slot
(PCIE_16_1) operates at up to x16, whereas the second PCIe x16
slot becomes unavailable.
SLI Mode: In SLI Mode, you may use the two PCIe x16 slots for the
following functions:
1. SLI Configuration: Install two SLI-capable PCIe x16 graphics cards of the same model to
enable SLI function.
2. Independent PCI x8 slots: Use the two PCIe x16 slots as two independent PCIe x8 slots.
Both of the PCIe x16 slots will be unavailable when the SLI switch module is removed from
the motherboard.
II. Power Requirements:
Before installation, assure that the power supply you use is able to provide sufficient power to fully
support an SLI configuration and other components in your system. We recommend a power supply
that provides at least 20A 5V and 12V current and a minimum of 400W wattage. Note that the exact
power requirements will depend on your overall system configurations.
III. Supported Operating Systems:
Only Windows XP operating system is currently supported by the nVIDIA® SLI technology.
Enabling SLI Operation
Setting the SLI switch module:
The SLI switch module is set to Normal Mode operation by factory default, so the first step is to take out the
module from the socket, turn it around and insert it in the SLI Mode direction.
SLI Bridge Connector
SLI Switch Module
English
®
Step 1: Gently spread the retaining clips of the socket and the module
will be released. Hold the module by the edges and lift it
away from the socket.
Hardware Installation- 17 -
English
Step 2: Turn the module to the SLI Mode. Align the small notch at the
top edge of the module with the key in the socket. Insert the
top edge of the module into the socket. Make sure the gold
edge connectors are fully inserted.
Step 3: Gently press down on the two ends of the module until it is
locked in place by the socket clips. (You should hear a "click"
when the module fits in.)
Connecting Two Graphics Cards:
Step 1: Observe the steps in section "1-5 Installation of Expansion
Cards" and install two SLI-ready graphics cards of the same
model in the PCIE_16_1 and PCIE_16_2 slots.
Step 2: Insert the SLI bridge into the SLI gold edge connectorson top
of both cards. Make sure the two mini female slots on the
bridge connector securely fit onto the SLI gold edge connetors.
Gold edge connector on the top of
Female slots on the bridge connector
graphics card
Step 3: In order to securely fix the bridge connector between the two
cards, you must install the retention bracket included with the
motherboard and secure the retention bracket to the chassis
back panel with a screw.
Place this section on the top
of the bridge connector.
retention bracket
GA-N650SLI-DS4 Motherboard- 18 -
Step 4: Plug the display cable into either one of the two graphics
cards for display output. If you plug the display cable into the
card on the PCIE_16_1 slot, make sure to set Init DisplayFirst in BIOS Setup to PEG; if you plug the display cable
into the card on the PCIE_16_2 slot, set Init DisplayFirst to PEG(Slot2).
Graphics Card Driver Setting:
Step 1: After installing graphics card driver in operating system, right-
click the NVIDIA icon in your system tray and then select
NVIDIA Display. The NVIDIA control panel will appear.
Step 2: Select SLI multi-GPU from the side menu and then
select the Enable SLI multi-GPU checkbox in the SLI
multi-GPU dialog box. System will restart after you
click Apply. Then the SLI configuration is completed.
English
(Note) For more information about software configurations for SLI, refer to the user's manual for your
graphics card.
Hardware Installation- 19 -
English
1-7I/O Back Panel Introduction
PS/2 Keyboard and PS/2 Mouse Connector
To install a PS/2 port keyboard and mouse, plug the mouse to the upper port (green) and the
keyboard to the lower port (purple).
Parallel Port
The parallel port allows connection of a printer, scanner and other peripheral devices.
COAXIAL
The SPDIF coaxial output port is capable of providing digital audio to external speakers or
compressed AC3 data to an external Dolby Digital Decoder via a coaxial cable.
OPTICAL
The SPDIF optical output port is capable of providing digital audio to external speakers or
compressed AC3 data to an external Dolby Digital Decoder via an optical cable.
COMA (Serial Port)
Connects to serial-based mouse or data processing devices.
IEEE 1394a Port
Serial interface standard set the Institute of Electrical and Electronics Engineers, which has
features like high speed, highbandwidth and hot plug.
USB Port
Before you connect your device(s) into USB connector(s), please make sure your device(s) such
as USB keyboard, mouse, scanner, zip, speaker...etc. have a standard USB interface. Also
make sure your OS supports USB controller. If your OS does not support USB controller, please
contact OS vendor for possible patch or driver upgrade. For more information please contact your
OS or device(s) vendors.
LAN Port
The provided Internet connection is Gigabit Ethernet , providing data transfer speeds of 10/100/
1000 Mbps.
Center/Subwoofer Speaker Out
The default Center/Subwoofer Speaker Out jack. Center/Subwoofer speakers can be connected to
Center/Subwoofer Speaker Out jack.
Surround Speaker Out (Rear Speaker Out)
The default Surround Speaker Out (Rear Speaker Out) jack. Rear surround speakers can be
connected to Surround Speaker Out (Rear Speaker Out) jack.
Side Speaker Out
The default Side Speaker Out jack. Surround side speakers can be connected to Side Speaker Out
jack.
Line In
The default Line In jack. Devices like CD-ROM, walkman etc. can be connected to Line In jack.
GA-N650SLI-DS4 Motherboard- 20 -
Line Out (Front Speaker Out)
The default Line Out (Front Speaker Out) jack. Stereo speakers, earphone or front surround
speakers can be connected to Line Out (Front Speaker Out) jack.
MIC In
The default MIC In jack. Microphone must be connected to MIC In jack.
In addition to the default speakers settings, the ~ audio jacks can be reconfigured to perform
different functions via the audio software. Only microphones still MUST be connected to the
default Mic In jack ( ). Please refer to the 2-/4-/6-/8- channel audio setup steps for detailed
software configuration information.
1-8Connectors Introduction
1
12
7
4
6
2
9
10
English
14
1)ATX_12V_2X
2)ATX (Power Connector)
3)PCIE_12V
4)CPU_FAN
5)SYS_FAN
6)PWR_FAN
7)NB_FAN
8)FDD
9)IDE1/IDE2
10)SATAII0/1/2/3
5
18
20
19
15
3
17
8
13 11
16
11)F_PANEL
12)F_AUDIO
13)PWR_LED
14)CD_IN
15)SPDIF_IN
16)F_USB1/F_USB2
17)F1_1394/F2_1394
18)C I
19)CLR_CMOS
20)BATTERY
Hardware Installation- 21 -
English
1/2) ATX_12V_2X / ATX (Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the
components on the motherboard. Before connecting the power connector, please make sure that
all components and devices are properly installed. Align the power connector with its proper
location on the motherboard and connect tightly.
The ATX 12V (2x4-pin) power connector mainly supplies power to the CPU. If the ATX 12V (2x4)
power connector is not connected, the system will not start. If you wish to install a power supply
that provides ATX 12V (2x2-pin) power connector, please connect the ATX 12V power connector
to the Pin 3, 4, 7, 8 of the onboard ATX_12V_2X power connector according to the pin definitions.
Important Use of a power supply providing an ATX 12V (2x4-pin) power connector is recommended by processor manufacturer when using Intel® Pentium® Extreme Edition series processors
(130W or greater).
Caution! Please use a power supply that is able to handle the system voltage requirements. It is
recommended that a power supply that can withstand high power consumption be used (400W or
greater). If a power supply is used that does not provide the required power, the result can lead to an
unstable system or a system that is unable to start. If you use a power supply that provides a 24-pin
ATX or 2x4 pin ATX 12V power connector, please remove the small cover on the power connector on
the motherboard before plugging in the power cord; otherwise, please do not remove it.
Pin No.Definition
8
5
ATX_12V_2X
4
1
1GND
2GND
3GND
4GND
5+12V
6+12V
7+12V
8+12V
12
1
24
13
ATX
Pin No.Definition
13.3V
23.3V
3GND
4+5V
5GND
6+5V
7GND
8Power Good
95V SB(stand by +5V)
10+12V
11+12V(Only for 24-pin ATX)
12 3.3V(Only for 24-pin ATX)
GA-N650SLI-DS4 Motherboard- 22 -
Pin No.Definition
133.3V
14-12V
15GND
16PS_ON(soft On/Off)
17GND
18GND
19GND
20-5V
21+5V
22+5V
23+5V (Only for 24-pin ATX)
24GND(Only for 24-pin ATX)
3) PCIE_12V (Power Connector)
This power connector provides extra power to the onboard PCI Express x16 slot. When installing
two graphics cards, please connect the power cable from the power supply to this connector, or
system instability may occur.
PIin No.Definition
1NC
1
2GND
3GND
4+12V
4/5/6) CPU_FAN / SYS_FAN / PWR_FAN (Cooler Fan Power Connector)
The cooler fan power connector supplies a +12V power voltage via a 3-pin/4-pin (only for
CPU_FAN/SYS_FAN) power connector and possesses a foolproof connection design. Most
coolers are designed with color-coded power connector wires. A red power connector wire
indicates a positive connection and requires a +12V power voltage. The black connector wire is
the ground wire (GND).
Please remember to connect the CPU/system fan cable to the CPU_FAN/SYS_FAN connector to
prevent the CPU/system from overheating and failure.
CPU_FAN/SYS_FAN:
Pin No.Definition
1
CPU_FAN
1
SYS_FAN
1
PWR_FAN
1GND
2+12V/Speed Control
3Sense
4Speed Control
PWR_FAN:
Pin No.Definition
1GND
2+12V
3NC
English
Hardware Installation- 23 -
English
7) NB_FAN (Chip Fan Connector)
If you connect the fan connector in the wrong direction, the chip fan will not work or may be
damaged. (Usually black cable is GND)
Pin No.Definition
1
1GND
2+12V
3NC
8) FDD (Floppy Connector)
The FDD connector is used to connect the FDD cable while the other end of the cable connects to the
FDD drive. The types of FDD drives supported are: 360 KB, 720 KB, 1.2 MB, 1.44 MB and
2.88 MB. Before attaching the FDD cable, please take note of the foolproof groove in the FDD
connector.
33
34
GA-N650SLI-DS4 Motherboard- 24 -
1
2
9) IDE1/IDE2 (IDE Connector)
An IDE device connects to the computer via an IDE connector. One IDE connector can connect to
one IDE cable, and the single IDE cable can then connect to two IDE devices (hard drive or optical
drive). If you wish to connect two IDE devices, please set the jumper on one IDE device as Master
and the other as Slave (for information on settings, please refer to the instructions located on the IDE
device). Before attaching the IDE cable, please take note of the foolproof groove in the IDE connector.
English
4039
21
IDE2IDE1
4039
21
10) SATAII0/1/2/3 (SATA 3Gb/s Connector)
SATA 3Gb/s can provide up to 300 MB/s transfer rate. Please refer to the BIOS setting for the Serial
ATA and install the proper driver in order to work properly.
SATAII0
7
SATAII1
SATAII2
1
7
1
SATAII3
71
71
Pin No.Definition
1GND
2TXP
3TXN
4GND
5RXN
6RXP
7GND
Hardware Installation- 25 -
English
11) F_PANEL (Front Panel Jumper)
Please connect the power LED, PC speaker, reset switch and power switch etc. of your chassis
front panel to the F_PANEL connector according to the pin assignment below.
Message LED/
Power/
Sleep LED
MSG+
2
1
HD+
IDE Hard Disk Active LED
HD (IDE Hard Disk Active LED)Pin 1: LED anode(+)
(Blue)Pin 2: LED cathode(-)
SPEAK (Speaker Connector)Pin 1: Power
(Amber)Pin 2- Pin 3: NC
Pin 4: Data(-)
RES (Reset Switch)Open: Normal
(Green)Close: Reset Hardware System
PW (Power Switch)Open: Normal
(Red)Cl ose : Power On/Off
MSG (Message LED/Power/Sleep LED)Pin 1: LED anode(+)
(Yellow)Pin 2: LED cathode(-)
NC ( Purple)NC
Power
Switch
PW+
PW-
MSG-
HD-
RES+
RES-
Reset Switch
Speaker Connector
SPEAK+
NC
SPEAK-
20
19
GA-N650SLI-DS4 Motherboard- 26 -
12) F_AUDIO (Front Audio Connector)
This connector supports either HD (High Definition) or AC97 front panel audio module. If you wish
to use the front audio function, connect the front panel audio module to this connector. Check the pin
assignments carefully while you connect the front panel audio module. Incorrect connection
between the module and connector will make the audio device unable to work or even damage it.
For optional front panel audio module, please contact your chassis manufacturer.
910
2
1
AC'97 Audio:HD Audio:
Pin No.Definition
1MIC2_L
2GND
3MIC2_R
4-ACZ_DET
5LINE2_R
6FSENSE1
7FAUDIO_JD
8No Pin
9LINE2_L
10FSENSE2
Pin No.Definition
1MIC
2GND
3MIC Power
4NC
5Line Out (R)
6NC
7NC
8No Pin
9Line Out (L)
10NC
English
By default, the audio driver is configured to support HD Audio. To connect an AC97 front panel
audio module to this connector, please refer to the instructions on Page 85 about the software
settings.
Hardware Installation- 27 -
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