Gigabyte Ga7n400 Manual

Hardware Installation Process
English
- 17 -
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...

- 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...

Hardware Installation Process
English
- 19 -
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:...

- 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....

Hardware Installation Process
English
- 21 -
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),...

- 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...

Hardware Installation Process
English
- 23 -
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....

- 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...

Hardware Installation Process
English
- 25 -
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...

- 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...