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GA-B75N
User's Manual
Rev. 1002
12ME-B75N-1002R
Motherboard
GA-B75N
Motherboard
GA-B75N
Oct. 12, 2012
Oct. 12, 2012
Copyright
©©2013 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of GIGABYTE.
Changes to the specifications and features in this manual may be made by GIGABYTE without prior notice.
No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by any means without GIGABYTE's prior written permission.
In order to assist in the use of this product, carefully read the User's Manual.
For product-related information, check on our website at: http://www.gigabyte.com
Identifying Your Motherboard Revision
The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0" means the revision of the motherboard is 1.0. Check your motherboard revision before updating motherboard BIOS, drivers, or when looking for technical information.
Example:
Table of Contents
GA-B75N Motherboard Layout......................................................................................... |
5 |
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GA-B75N Motherboard Block Diagram............................................................................ |
6 |
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Chapter 1 Hardware Installation...................................................................................... |
7 |
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1-1 |
Installation Precautions..................................................................................... |
7 |
1-2 |
Product Specifications...................................................................................... |
8 |
1-3 Installing the CPU and CPU Cooler................................................................ |
10 |
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1-4 |
Installing the Memory...................................................................................... |
11 |
1-5 Installing an Expansion Card.......................................................................... |
11 |
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1-6 |
Back Panel Connectors.................................................................................. |
12 |
1-7 |
Internal Connectors........................................................................................ |
14 |
Chapter 2 BIOS Setup................................................................................................... |
22 |
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2-1 |
Startup Screen................................................................................................ |
22 |
2-2 |
The Main Menu............................................................................................... |
23 |
2-3 |
M.I.T................................................................................................................ |
24 |
2-4 |
System............................................................................................................ |
32 |
2-5 |
BIOS Features................................................................................................ |
33 |
2-6 |
Peripherals...................................................................................................... |
36 |
2-7 |
Power Management........................................................................................ |
39 |
2-8 |
Save & Exit..................................................................................................... |
41 |
Chapter 3 Drivers Installation........................................................................................ |
42 |
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Regulatory Statements.............................................................................................. |
43 |
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- 4 -
GA-B75N Motherboard Layout
SATA3 0 |
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F_PANEL |
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SATA2 1 |
SATA2 |
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KB_USB3 |
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ATX |
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F_USB1 |
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F_USB30
DOUBLE_HDMI
Intel® B75
DVI |
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ATX_12V |
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SYS_FAN |
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USB_LAN2 |
Realtek |
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GbE LAN |
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USB_LAN1 |
Realtek |
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GbE LAN |
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F_AUDIO |
COM |
MINIPCIE |
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iTE |
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Super I/O (Note) |
CLR_CMOS |
BAT |
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LGA1155 |
-B75N |
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GA |
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DDR3 1 |
DDR3 2 |
AUDIO |
SPDIF_O |
CPU_FAN |
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PCIEX16 |
M_BIOS |
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CODEC |
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B_BIOS |
Box Contents
55 |
GA-B75N motherboard |
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55 |
Motherboard driver disk |
55 |
Two SATA 6Gb/s cables |
55 |
User's Manual |
55 |
I/O Shield |
* The box contents above are for reference only and the actual items shall depend on the product package you obtain.
(Note) The chip is located on the back of the motherboard. - 5 -
GA-B75N Motherboard Block Diagram
1 PCI Express x16
PCIe CLK
(100 MHz)
PCI Express Bus |
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LAN |
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LAN |
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RJ45 |
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RJ45 |
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Realtek |
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Realtek |
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GbE LAN |
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PCI Express Bus |
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1 MINI PCI Express |
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1 SATA 6Gb/s |
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3 SATA 3Gb/s |
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CPU CLK+/- (100 MHz) |
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LGA1155 |
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DDR3 1600/1333/1066/800 MHz |
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CPU |
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Dual Channel Memory |
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DMI Interface |
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FDI Interface |
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HDMI |
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DVI-I |
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Dual BIOS |
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Intel® B75 |
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4 USB 3.0/2.0 |
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6 USB 2.0/1.1 |
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LPC |
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Bus |
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iTE |
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COM |
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Super I/O |
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CODEC |
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PS/2 KB/Mouse |
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In |
S/PDIFOut |
SpeakerOut SpeakerOut |
Out |
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Line |
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MIC Line |
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Rear Center/Subwoofer |
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For detailed product information/limitation(s), refer to "1-2 Product Specifications."
- 6 -
Chapter 1 Hardware Installation
1-1 Installation Precautions
The motherboard contains numerous delicate electronic circuits and components which can become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's manual and follow these procedures:
•• Prior to installation, make sure the chassis is suitable for the motherboard.
•• Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or warranty sticker provided by your dealer. These stickers are required for warranty validation.
•• Always remove the AC power by unplugging the power cord from the power outlet before installing or removing the motherboard or other hardware components.
•• When connecting hardware components to the internal connectors on the motherboard, make sure they are connected tightly and securely.
•• When handling the motherboard, avoid touching any metal leads or connectors.
•• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap, keep your hands dry and first touch a metal object to eliminate static electricity.
•• Prior to installing the motherboard, please have it on top of an antistatic pad or within an electrostatic shielding container.
•• Before unplugging the power supply cable from the motherboard, make sure the power supply has been turned off.
•• Before turning on the power, make sure the power supply voltage has been set according to the local voltage standard.
•• Before using the product, please verify that all cables and power connectors of your hardware components are connected.
•• To prevent damage to the motherboard, do not allow screws to come in contact with the motherboard circuit or its components.
•• Make sure there are no leftover screws or metal components placed on the motherboard or within the computer casing.
•• Do not place the computer system on an uneven surface.
•• Do not place the computer system in a high-temperature environment.
•• Turning on the computer power during the installation process can lead to damage to system components as well as physical harm to the user.
•• 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.
- 7 -
1-2 |
Product Specifications |
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CPU |
Support for Intel® Core™ i7 processors/Intel® Core™ i5 processors/ |
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Intel® Core™ i3 processors/Intel® Pentium® processors/Intel® Celeron® processors |
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in the LGA1155 package (Go to GIGABYTE's website for the latest CPU |
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support list.) |
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L3 cache varies with CPU |
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Chipset |
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Intel® B75 Express Chipset |
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Memory |
2 x 1.5V DDR3 DIMM sockets supporting up to 16 GB of system memory |
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* Due to a Windows 32-bit operating system limitation, when more than 4 GB of |
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physical memory is installed, the actual memory size displayed will be less than |
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the size of the physical memory installed. |
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Dual channel memory architecture |
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Support for DDR3 1600/1333/1066/800 MHz memory modules |
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* To support DDR3 1600 MHz, you must install an Intel 22nm (Ivy Bridge) CPU. |
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Support for non-ECC memory modules |
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Support for Extreme Memory Profile (XMP) memory modules |
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(Go to GIGABYTE's website for the latest supported memory speeds and |
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memory modules.) |
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Onboard Graphics |
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Integrated Graphics Processor: |
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1 x DVI-I port, supporting a maximum resolution of 1920x1200 |
-2 x HDMI ports, supporting a maximum resolution of 1920x1200
Audio |
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Realtek ALC892 codec |
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High Definition Audio |
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2/4/5.1/7.1-channel |
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Support for S/PDIF Out |
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LAN |
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2 x Realtek GbE LAN chips (10/100/1000 Mbit) |
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Expansion Slots |
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1 x PCI Express x16 slot, running at x16 |
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(The PCIEX16 slot conforms to PCI Express 3.0 standard.) |
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* Whether PCI Express 3.0 is supported depends on CPU and graphics card |
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compatibility. |
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1 x Mini PCI Express x1 slot |
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Storage Interface |
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Chipset: |
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1 x SATA 6Gb/s connector (SATA3 0) supporting up to 1 SATA 6Gb/s device |
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3 x SATA 3Gb/s connectors (SATA2 1/2/3) supporting up to 3 SATA 3Gb/s |
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devices |
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USB |
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Chipset: |
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Up to 4 USB 3.0/2.0 ports (2 ports on the back panel, 2 ports available |
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through the internal USB header) |
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Up to 6 USB 2.0/1.1 ports (4 ports on the back panel, 2 ports available |
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through the internal USB header) |
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Internal |
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1 x 24-pin ATX main power connector |
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Connectors |
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1 x 4-pin ATX 12V power connector |
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1 x serial port header |
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1 x SATA 6Gb/s connector |
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3 x SATA 3Gb/s connectors |
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- 8 - |
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Internal |
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1 x USB 3.0/2.0 header |
Connectors |
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1 x USB 2.0/1.1 header |
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1 x CPU fan header |
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1 x system fan header |
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1 x front panel header |
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1 x front panel audio header |
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1 x S/PDIF Out header |
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1 x Clear CMOS jumper |
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Back Panel |
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1 x PS/2 keyboard/mouse port |
Connectors |
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2 x HDMI ports |
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1 x DVI-I port |
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2 x USB 3.0/2.0 ports |
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4 x USB 2.0/1.1 ports |
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2 x RJ-45 ports |
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1 x optical S/PDIF Out connector |
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5 x audio jacks (Center/Subwoofer Speaker Out, Rear Speaker Out, Line In, |
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Line Out, Mic In) |
I/O Controller |
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iTE I/O Controller Chip |
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Hardware Monitor |
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System voltage detection |
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CPU/System temperature detection |
CPU/System fan speed detectionCPU fan speed control
*Whether the CPU fan speed control function is supported will depend on the CPU cooler you install.
BIOS |
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2 x 64 Mbit flash |
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Use of licensed AMI EFI BIOS |
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Support for DualBIOS™ |
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PnP 1.0a, DMI 2.0, SM BIOS 2.6, ACPI 2.0a |
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Unique Features |
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Support for @BIOS |
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Support for Q-Flash |
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Support for Xpress Install |
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Support for EasyTune |
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* Available functions in EasyTune may differ by motherboard model.
Support for Auto Green
Support for ON/OFF ChargeSupport for Q-Share
Support for EZ Setup
Bundled Software Norton Internet Security (OEM version)Intel® Rapid Start Technology
Intel® Smart Connect Technology
- 9 -
Operating System |
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Support for Microsoft® Windows 8/7/XP |
Form Factor |
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Mini-ITX Form Factor; 17.0cm x 17.0cm |
*GIGABYTE reserves the right to make any changes to the product specifications and product-related information without prior notice.
*Please visit the Support & Downloads\Utility page on GIGABYTE's website to check the supported operating system(s) for the software listed in the "Unique Features" and "Bundled Software" columns.
1-3 |
Installing the CPU and CPU Cooler |
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Read the following guidelines before you begin to install the CPU: |
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•• |
Make sure that the motherboard supports the CPU. |
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(Go to GIGABYTE's website for the latest CPU support list.) |
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•• |
Always turn off the computer and unplug the power cord from the power outlet before installing the |
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CPU to prevent hardware damage. |
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Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly. (Or you may |
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locate the notches on both sides of the CPU and alignment keys on the CPU socket.) |
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Apply an even and thin layer of thermal grease on the surface of the CPU. |
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Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and damage |
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of the CPU may occur. |
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Set the CPU host frequency in accordance with the CPU specifications. It is not recommended |
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that the system bus frequency be set beyond hardware specifications since it does not meet the |
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standard requirements for the peripherals. If you wish to set the frequency beyond the standard |
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specifications, please do so according to your hardware specifications including the CPU, graphics |
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card, memory, hard drive, etc. |
Installing the CPU
Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.
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LGA1155 CPU Socket |
Alignment Key |
Alignment Key |
Pin One Corner of the CPU Socket
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LGA1155 CPU |
Notch |
Notch |
Triangle Pin One Marking on the CPU
- 10 -
1-4 Installing the Memory
Read the following guidelines before you begin to install the memory:
•• Make sure that the motherboard supports the memory. It is recommended that memory of the same capacity, brand, speed, and chips be used.
(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)
•• Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.
•• Memory modules have a foolproof design. A memory module can be installed in only one direction. If you are unable to insert the memory, switch the direction.
Dual Channel Memory Configuration
This motherboard provides two DDR3 memory sockets and supports Dual Channel Technology. After the memory is installed, the BIOS will automatically detect the specifications and capacity of the memory. Enabling Dual
Channel memory mode will double the original memory bandwidth.
The two DDR3 memory sockets are divided into two channels and each channel has one memory socket as following:
Channel A: DDR3_1Channel B: DDR3_2
DDR3_2
DDR3_1
Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.
1.Dual Channel mode cannot be enabled if only one DDR3 memory module is installed.
2.When enabling Dual Channel mode with two memory modules, it is recommended that memory of the same capacity, brand, speed, and chips be used for optimum performance.
1-5 Installing an Expansion Card
Read the following guidelines before you begin to install an expansion card:
•• Make sure the motherboard supports the expansion card. Carefully read the manual that came with your expansion card.
•• Always turn off the computer and unplug the power cord from the power outlet before installing an expansion card to prevent hardware damage.
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1-6 Back Panel Connectors
PS/2 Keyboard/Mouse Port
Use this port to connect a PS/2 mouse or keyboard.
USB 3.0/2.0 Port
The USB 3.0 port supports the USB 3.0 specification and is compatible to the USB 2.0/1.1 specification. Use this port for USB devices such as a USB keyboard/mouse, USB printer, USB flash drive and etc.
HDMI Port
HDMI (High-Definition Multimedia Interface) is an all-digital audio/video
interface capable of transmitting uncompressed audio/video signals. The HDMI port is HDCP compliant and supports Dolby TrueHD and DTS HD Master Audio formats. It also supports up to 192KHz/24bit 8-channel LPCM audio output. You can use this port to connect your HDMIsupported audio/video device. The maximum supported resolution is 1920x1200, but the actual resolutions supported are dependent on the monitor being used.
After installing the HDMI device, make sure to set the default sound playback device to HDMI. 
(The item name may differ depending on your operating system. The screenshot below is from
Windows 7.)
In Windows 7, select Start>Control Panel>Hardware and Sound>Sound>Playback, set Intel(R) Display Audio to the default playback device.
Dual Display Configurations for the Onboard Graphics:
This motherboard provides two video output ports: DVI-I and HDMI. Dual monitor confgurations are supported in operating system environment only, but not during the BIOS Setup or POST process.
DVI-I Port
The DVI-I port conforms to the DVI-I specification and supports a maximum resolution of 1920x1200 (the actual resolutions supported depend on the monitor being used).
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RJ-45 LAN Port
The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The following describes the states of the LAN port LEDs.
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Activity LED: |
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Speed LED |
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Activity LED |
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Description |
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State |
Description |
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Orange |
1 Gbps data rate |
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Blinking |
Data transmission or receiving is occurring |
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Green |
100 Mbps data rate |
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Off |
No data transmission or receiving is occurring |
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Off |
10 Mbps data rate |
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LAN Port |
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USB 2.0/1.1 Port
The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices such as a USB keyboard/mouse, USB printer, USB flash drive and etc.
Center/Subwoofer Speaker Out Jack (Orange)
Use this audio jack to connect center/subwoofer speakers in a 5.1/7.1-channel audio configuration.
Rear Speaker Out Jack (Black)
Use this audio jack to connect rear speakers in a 4/5.1/7.1-channel audio configuration.
Optical S/PDIF Out Connector
This connector provides digital audio out to an external audio system that supports digital optical audio. Before using this feature, ensure that your audio system provides an optical digital audio in connector.
Line In Jack (Blue)
The default line in jack. Use this audio jack for line in devices such as an optical drive, walkman, etc.
Line Out Jack (Green)
The default line out jack. Use this audio jack for a headphone or 2-channel speaker. This jack can be used to connect front speakers in a 4/5.1/7.1-channel audio configuration.
Mic In Jack (Pink)
The default Mic in jack. Microphones must be connected to this jack.
The audio jacks can be reconfigured to perform different functions via the audio software. If you install a Side Speaker, you need to retask other audio jack to be Side Speaker out. Only microphones still MUST be connected to the default Mic in jack.
•• When removing the cable connected to a back panel connector, first remove the cable from your device and then remove it from the motherboard.
•• When removing the cable, pull it straight out from the connector. Do not rock it side to side to prevent an electrical short inside the cable connector.
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1-7 Internal Connectors
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10
14
1
4
13
9
3
1) |
ATX_12V |
8) |
F_PANEL |
2) |
ATX |
9) |
F_AUDIO |
3) |
CPU_FAN |
10) |
F_USB30 |
4) |
SYS_FAN |
11) |
F_USB1 |
5) |
BAT |
12) |
COM |
6) |
SATA3 0 |
13) |
SPDIF_O |
7) |
SATA2 1/2/3 |
14) |
CLR_CMOS |
Read the following guidelines before connecting external devices:
•• First make sure your devices are compliant with the connectors you wish to connect.
•• Before installing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.
•• After installing the device and before turning on the computer, make sure the device cable has been securely attached to the connector on the motherboard.
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