Gigabyte Ga7n400 Manual

							Hardware Installation Process
English
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Before installing the memory modules, adhere to the following warning:
1. When DIMM LED is ON, do not install / remove DIMM from socket.
2. Please note that the DIMM module can only fit in one direction due to
the one notch. Wrong orientation will cause improper installation.
Please change the insert orientation.
Step 3: Install Memory Modules
The motherboard has 4 dual inline memory module (DIMM) sockets. The BIOS will automatically
detects memory type and size. To install the memory module, just push it vertically into the DIMM
socket. The DIMM module can only fit in one direction due to the notch. Memory size can vary
between sockets.
DDR
Notch
Support Unbuffered DDR DIMM Sizes type:
64 Mbit (2Mx8x4 banks) 64 Mbit (1Mx16x4 banks) 128 Mbit(4Mx8x4 banks)
128 Mbit(2Mx16x4 banks) 256 Mbit(8Mx8x4 banks) 256 Mbit(4Mx16x4 banks)
512 Mbit(16Mx8x4 banks) 512 Mbit(8Mx16x4 banks)
Total System Memory (Max3GB)
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							- 18 - N400 Pro2 / N400 Series Motherboard
English
DDR Introduction
Established on the existing SDRAM industry infrastructure, DDR (Double Data Rate) memory is a
high performance and cost-effective solution that allows easy adoption for memory vendors, OEMs
and system integrators.
DDR memory is a sensible evolutionary solution for the PC industry that builds on the existing
SDRAM infrastructure, yet makes awesome advances in solving the system performance bottleneck
by doubling the memory bandwidth. DDR SDRAM will offer a superior solution and migration path from
existing SDRAM designs due to its availability, pricing and overall market support. PC2100 DDR
memory (DDR266) doubles the data rate through reading and writing at both the rising and falling edge
of the clock, achieving data bandwidth 2X greater than PC133 when running with the same DRAM
clock frequency. With peak bandwidth of 2.664GB per second, DDR memory enables system OEMs
to build high performance and low latency DRAM subsystems that are suitable for servers, workstations,
high-end PCs and value desktop SMA systems.1. The DIMM socket has a notch, so the DIMM memory
module can only fit in one direction.
2. Insert the DIMM memory module vertically into the DIMM
socket. Then push it down.
3. 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.
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							Hardware Installation Process
English
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1 memory module
2 memory modules
DIMM 1 DIMM 2 DIMM 3 DIMM 4
DS/SS X X X
X DS/SS X X
X X DS/SS X
XXXDS
DS/SS DS/SS X X
X X SS SS
 Figure 2: Non Dual Channel Technology (DS: Double Side, SS: Single Side)
2 memory modules
3 memory modules
4 memory modules
DIMM 1 DIMM 2 DIMM 3 DIMM 4
DS/SS X DS/SS X
X DS/SS DS/SS X
DS/SS X X DS
X DS/SS X DS
DS/SS DS/SS DS/SS X
DS/SS DS/SS X DS
X DS/SS SS SS
DS/SS X SS SS
DS/SS DS/SS SS SS
 Figure 1: Dual Channel Technology (DS: Double Side, SS: Single Side) The following tables include all memory-installed combination types:
(Please note that those types not in the tables will not boot up.)Below are the explanations:
If you want to operate the Dual Channel Technology, please note the following explanations
due to the limitation of Intel chipset specifications.
1. Only one DDR memory module is installed: The Dual Channel Technology cant
operate when only one DDR memory module is installed.
2. Two DDR memory modules are installed: The Dual Channel Technology will operate
when two memory modules are inserted individually into Channel A and B. If you install
two memory modules in the same channel, the Dual Channel Technology will not
operate.
3. Three or Four DDR memory modules are installed: Please follow figure 1 to achieve the
Dual Technology.
Dual Channel DDR:
GA-7N400 Pro2 / GA-7N400 / GA-7N400-L support Dual Channel Technology. When Dual Channel
Technology is activated, the bandwidth of memory bus will be double the original one, with the fastest
speed at 6.4GB/s(DDR400) .
GA-7N400 Pro2 / GA-7N400 / GA-7N400-L include 4 DIMM slots, and each Channel has 2 DIMMs as
following:
Channel A : DIMM 1, 2
Channel B : DIMM 3, 4
If memories are inserted on dimm3 and dimm4 at the same time, please note that the memories
must be exactly identical in device, type, size and single side. This is enssential to let system
boot up correctly
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							- 20 - N400 Pro2 / N400 Series Motherboard
English
When an AGP 2X (3.3V) card is installed the 2X_DETwill light up, indicating a non-supported
graphics card is inserted. Informing users that system might not boot up normally due to
AGP 2X (3.3V) is not supported by the chipset.
Step 4: Install expansion cards
1. Read the related expansion cards instruction document before install the expansion card into the computer.
2. Remove your computers 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 computers 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.
Please carefully pull out the small white-drawable bar at the end of the AGP slot when you try
to install / uninstall the AGP card. Please align the AGP card to the onboard AGP slot and
press firmly down on the slot. Make sure your AGP card is locked by the small white-
drawable bar.
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							Hardware Installation Process
English
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Step 5: Connect ribbon cables, cabinet wires and power supply
Step 5-1: I/O Back Panel Introduction







 For GA-7N400 Pro2 only.   For GA-7N400-L only.
GA-7N400 Pro2 / GA-7N400-L
GA-7N400

 PS/2 Keyboard and PS/2 Mouse Connector
This connector supports standard PS/2
keyboard and PS/2 mouse. PS/2 Mouse Connector
(6 pin Female)
PS/2 Keyboard Connector
(6 pin Female)

/ USB/LAN ConnectorBefore 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.
USB 0
USB 1USB 2
USB 3
LAN
(

 )
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							- 22 - N400 Pro2 / N400 Series Motherboard
English
Line In (Rear Speaker)
MIC In (Center and Subwoofer) Line Out (Front Speaker)
 Audio ConnectorsAfter install onboard audio driver, you may con-
nect speaker to Line Out jack, microphone to MIC
In jack. Device like CD-ROM,walkman etc. can
be connected to Line-In jack.
Please note:
You are able to use 2-/4-/6-channel audio feature
by S/W selection.
If you want to enable 6-channel function, you
have 2 choose for hardware connection.
Method1:
Connect Front Speaker to Line Out
Connect Rear Speaker to Line In
Connect Center and Subwoofer to MIC Out .
Method2:
You can refer to page 32, and contact your
nearest  dealer for optional SUR_CEN cable.
If you want the detail information for 2-/4-/6-channel audio setup
installation, please refer to page 79.
According to your motherboard, please see the
following descriptions for the devices. Device
like printer can be connected to Parallel port;
mouse and modem etc. can be connected to
Serial ports.
 Parallel Port, Serial Ports COM1 / COM2
COM1 COM2
Serial Port (9 pin Male)
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							Hardware Installation Process
English
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Step 5-2: Connectors Introduction
1) ATX_12V
2) ATX
3) CPU_FAN
4) SYS_FAN
5) PWR_FAN(
)
6) NB_FAN(
)
7) FDD
8) IDE1 / IDE2
9) IDE3 (
) / IDE4 (
)
10) SATA 0  (
) / SATA1 (
)
11) F_PANEL
12) BAT
13) PWR_LED
14) RAM_LED
15) 2X_DET
16) F_AUDIO
17) SUR_CEN
18) SPDIF_IO
19) CD_IN
20) AUX_IN
21) F_USB
22) F1_1394 (
) / F2_1394 (
)
23) I R
24) GAME
25) INFO_LINK
26) C I
25 1816 15
243
8
9 
(
)
2
5(
)
7
11
1
19
17
2322(
)13
12 10 
(
)
28 14
4

 For GA-7N400 Pro2 only.   For GA-7N400 only.  For GA-7N400-L only.6
(
)
20
21
26
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							- 24 - N400 Pro2 / N400 Series Motherboard
English
1) ATX_12V (+12V Power Connector)
This connector (ATX_12V) supplies the CPU operation voltage (Vcore).
If this ATX_12V connector is not connected, system cannot boot.
Pin No. Definition
1 GND
2 GND
3 +12V
4 +12V
2) ATX (ATX Power)
AC power cord should only be connected to your power supply unit after ATX power cable and
other related devices are firmly connected to the mainboard.
Pin No. Definition1 3.3V2 3.3V3 GND4 VCC5 GND6 VCC7 GND8 Power Good95V SB (stand by +5V)10 +12V11 3.3V12 -12V13 GND14 PS_ON(soft on/off)15 GND16 GND17 GND18 -5V19 VCC
20 VCC
201 11
10 4 3
21
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							Hardware Installation Process
English
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3) CPU_FAN (CPU Fan Connector)
Please note, a proper installation of the CPU cooler is essential to prevent the CPU from running
under abnormal condition or damaged by overheating. The CPU fan connector supports Max.
current up to 600 mA.
Pin No. Definition
1 GND
2 +12V
3 Sense
4) SYS_FAN (System Fan Connector)
This connector allows you to link with the cooling fan on the system case to lower the system
temperature.
Pin No. Definition
1 GND
2 +12V
3 Sense11
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							- 26 - N400 Pro2 / N400 Series Motherboard
English

 For GA-7N400 Pro2 only.   For GA-7N400 only.  For GA-7N400-L only.
5) PWR_FAN (Power Fan Connector)(
)
This connector allows you to link with the cooling fan on the system case to lower the system
temperature.
Pin No. Definition
1 GND
2 +12V
3 Sense
6) NB_FAN (Chip Fan Connector)(
)
If you installed wrong direction, the chip fan will not work. Sometimes will damage the chip fan.
(Usually black cable is GND)
11
Pin No.Definition1 VCC
2 GND
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