Internal Connectors1 x 24-pin ATX main power connector
1 x 4-pin ATX 12V power connector1 x floppy disk drive connector1 x IDE connector6 x SATA3Gb/s connectors1 x CPU fan header2 x system fan headers1 x power fan header1 x North Bridge fan header1 x front panel header1 x front panel audio header1 x CD In connector1 x S/PDIF In header1 x S/PDIF Out header2 x USB 2.0/1.1 headers1 x IEEE 1394a header1 x parallel port header1 x serial port header1 x power LED header1 x chassis intrusion header
Back Panel1 x PS/2 keyboard portConnectors1 x PS/2 mouse port
1 x coaxial S/PDIF Out connector1 x optical S/PDIF Out connector8 x USB 2.0/1.1 ports2 x IEEE 1394a ports1 x RJ-45 port6 x audio jacks (Center/Subwoofer Speaker Out/Rear Speaker Out/Side
Speaker Out/Line In/Line Out/Microphone)I/O ControlleriTE IT8720 chipHardware MonitorSystem voltage detection
CPU/System temperature detectionCPU/System/Power fan speed detectionCPU overheating warningCPU/System/Power fan fail warningCPU/System fan speed control
(Note 4)
BIOS2 x 8 Mbit flash
Use of licensed AWARD BIOSSupport for DualBIOS
TM
PnP 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0b
Hardware Installation- 11 -
Unique FeaturesSupport for @BIOS
Support for Download CenterSupport for Q-FlashSupport for EasyTune
(Note 5)
Support for Xpress InstallSupport for Xpress Recovery2Support for Virtual Dual BIOSSupport for Easy Energy Saver
(Note 6)
Bundled SoftwareNorton Internet Security (OEM version)Operating SystemSupport for Microsoft®Windows®Vista/XPForm FactorATX Form Factor; 30.5cm x 21.0cm
(Note 1)Due to Windows Vista/XP 32-bit operating system limitation, when more than 4 GB of physical
memory is installed, the actual memory size displayed will be less than 4 GB.(Note 2)Whether 1200MHz memory speed is supported depends on the CPU being used.(Note 3)Use of a CPU that supports ECC is required if you wish to install ECC memory.(Note 4)Whether the CPU/system fan speed control function is supported will depend on the CPU/
system cooler you install.(Note 5)Available functions in EasyTune may differ by motherboard model.(Note 6)Due to the hardware limitation, you must install the AMD AM2+ PhenomTMSeries CPU to
enable support for Easy Energy Saver.
GA-MA770-UD3/US3 Motherboard-12-
1-3Installing the CPU and CPU Cooler
Read the following guidelines before you begin to install the CPU:
•Make sure that the motherboard supports the CPU.(Go to GIGABYTE's website for the latest CPU support list.)
•Always turn off the computer and unplug the power cord from the power outlet beforeinstalling the CPU to prevent hardware damage.
•Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly.
•Apply an even and thin layer of thermal grease on the surface of the CPU.
•Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and
damage of the CPU may occur.
•Set the CPU host frequency in accordance with the CPU specifications. It is not recom-mended that the system bus frequency be set beyond hardware specifications since itdoes not meet the standard requirements for the peripherals. If you wish to set the frequencybeyond the standard specifications, please do so according to your hardware specificationsincluding the CPU, graphics card, memory, hard drive, etc.
1-3-1Installing the CPU
A.Locate the pin one (denoted by a small triangle) of the CPU socket and the CPU.
A Small Triangle Mark
Denotes Pin One ofthe
Socket
A Small Triangle Marking
Denotes CPU Pin One
AM2 Socket
AM2+/AM2 CPU
Hardware Installation- 13 -
B.Follow the steps below to correctly install the CPU into the motherboard CPU socket.
Before installing the CPU, make sure to turn off the computer and unplug the power
cord from the power outlet to prevent damage to the CPU.
CPU Socket Locking
Lever
Step 1:Completely lift up the CPU socket locking lever.
Step 2:Align the CPU pin one (small triangle marking)with the triangle mark on the CPU socket andgently insert the CPU into the socket. Makesure that the CPU pins fit perfectly into theirholes. Once the CPU is positioned into itssocket, place one finger down on the middle ofthe CPU, lowering the locking lever and latch-ing it into the fully locked position.
Do not force the CPU into the CPU socket. The CPU cannot fit in if oriented incorrectly. Adjustthe CPU orientation if this occurs.
GA-MA770-UD3/US3 Motherboard-14-
1-3-2Installing the CPU Cooler
Follow the steps below to correctly install the CPU cooler on the CPU. (The following procedure usesthe GIGABYTE cooler as the example.)
Step 1:Apply an even and thin layer of thermal greaseon the surface of the installed CPU.
Step 3:Hook the CPU cooler clip to the mounting lug onone side of the retention frame. On the other side,push straight down on the the CPU cooler clip tohook it to the mounting lug on the retention frame.
Step 5:Finally, attach the power connector of the CPUcooler to the CPU fan header (CPU_FAN) onthe motherboard.
Step 2:Place the CPU cooler on the CPU.
Step 4:Turn the cam handle from the left side to theright side (as the picture above shows) to lockinto place. (Refer to your CPU cooler installa-tion manual for instructions on installing thecooler.)
Use extreme care when removing the CPU cooler because the thermal grease/tape betweenthe CPU cooler and CPU may adhere to the CPU. Inadequately removing the CPU coolermay damage the CPU.
Hardware Installation- 15 -
1-4Installing 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 ofthe same capacity, brand, speed, and chips be used.(Go to GIGABYTE's website for the latest memory support list.)
•Always turn off the computer and unplug the power cord from the power outlet beforeinstalling the memory to prevent hardware damage.
•Memory modules have a foolproof design. A memory module can be installed in only onedirection. If you are unable to insert the memory, switch the direction.
1-4-1Dual Channel Memory Configuration
This motherboard provides four DDR2 memory sockets and supports Dual ChannelTechnology. After the memory is installed, the BIOS will automatically detect thespecifications and capacity of the memory. Enabling Dual Channel memory modewill double the original memory bandwidth.
The four DDR2 memory sockets are divided into two channels and each channel has two memorysockets as following:
If two memory modules are to be installed, it is recom-
mended that you install them in the DDRII_1 and DDRII_2
sockets.
DDRII_3
DDRII_1
DDRII_2
DDRII_4
Due to CPUlimitation, readthe following guidelines before installing the memory in Dual Channel mode.
1.Dual Channel mode cannot be enabled if only one DDR2 memory module is installed.
2.When enabling Dual Channel mode with two or four memory modules, it is recommended thatmemory of the same capacity, brand, speed, and chips be used and installed in the samecolored DDR2 sockets for optimum performance.
GA-MA770-UD3/US3 Motherboard-16-
1-4-2Installing a Memory
Before installing a memory module , make sure to turn off the computer and unplug
the power cord from the power outlet to prevent damage to the memory module.
DDR2 DIMMs are not compatible to DDR DIMMs. Be sure to install DDR2 DIMMs on
this motherboard.
Notch
DDR2 DIMM
A DDR2 memory module has a notch, so it can only fit in one direction. Follow the steps below tocorrectly install your memory modules in the memory sockets.
Step 1:Note the orientation of the memory module. Spread the retainingclips at both ends of the memory socket. Place the memorymodule on the socket. As indicated in the picture on the left,place your fingers on the top edge of the memory, push downon the memory and insert it vertically into the memory socket.
Step 2:The clips at both ends of the socket will snap into place whenthe memory module is securely inserted.
Hardware Installation- 17 -
1-5Installing 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 thatcame with your expansion card.
•Always turn off the computer and unplug the power cord from the power outlet beforeinstalling an expansion card to prevent hardware damage.
PCI Express x1 Slot
PCI Express x16 Slot
PCI Slot
Follow the steps below to correctly install your expansion card in the expansion slot.
1.Locate an expansion slot that supports your card. Remove the metal slot cover from the chassis back panel.
2.Align the card with the slot, and press down on the card until it is fully seated in the slot.
3.Make sure the metal contacts on the card are completely inserted into the slot.
4.Secure the card's metal bracket to the chassis back panel with a screw.
5.After installing all expansion cards, replace the chassis cover(s).
6.Turn on your computer. If necessary, go to BIOS Setup to make any required BIOS changes foryour expansion card(s).
7.Install the driver provided with the expansion card in your operating system.
Example: Installing and Removing a PCI Express x16 Graphics Card:
•Installing a Graphics Card:Gently push down on the top edge of the carduntil it is fully inserted into the PCI Express x16slot. Make sure the card is securely seated inthe slot and does not rock.
•Removing the Card:Gently push back on the lever on the slot and then lift the card straight outfrom the slot.
GA-MA770-UD3/US3 Motherboard-18-
1-6Back Panel Connectors
PS/2 Keyboard and PS/2 Mouse Port
Use the upper port (green) to connect a PS/2 mouse and the lower port (purple) to connect aPS/2 keyboard.
Optical S/PDIF Out Connector
This connectorprovides digital audio out to an external audio system that supports digital opticalaudio. Before using this feature, ensure that your audio system provides anoptical digital audio inconnector.
Coaxial S/PDIF Out Connector
This connector provides digital audio out to an external audio system that supports digital coaxialaudio. Before using this feature, ensure that your audio system provides a coaxial digital audio inconnector.
USB Port
The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices such as anUSB keyboard/mouse, USB printer, USB flash drive and etc.
IEEE 1394a Port
The IEEE 1394 port supports the IEEE 1394a specification, featuring high speed, high bandwidthand hotplug capabilities. Use this port for an IEEE 1394a device.
RJ-45 LAN Port
The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The followingdescribes the states of the LAN port LEDs.
Connection/Speed LED
LAN Port
Activity LED
Connection/Speed LED:
StateDescription
Orange1Gbps data rate
Green100 Mbps data rate
Off10 Mbps data rate
Activity LED:
StateDescription
BlinkingData transmission or receiving is occurring
OffNo data transmission or receiving is occurring
•When removing the cable connected to a back panel connector, first remove the cablefrom 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 sideto prevent an electrical short inside the cable connector.
Hardware Installation- 19 -
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.
Side Speaker Out Jack (Gray)
Use this audio jack to connect side speakers in a 7.1-channel audio configuration.
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 canbe 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.
In addition to the default speakers settings, the~audio jacks can be reconfigured toperform different functions via the audio software. Only microphones still MUST beconnected to the default Mic in jack (
7.1-channel audio configuration in Chapter 5, "Configuring 2/4/5.1/7.1-Channel Audio."
). Refer to the instructions on setting up a 2/4/5.1/
GA-MA770-UD3/US3 Motherboard-20-
1-7Internal Connectors
4
3
2
1
12
6
2014
13
15
22
17
1)ATX_12V
2)ATX
3)CPU_FAN
4)SYS_FAN1/SYS_FAN2
5)PWR_FAN
6)NB_FAN
7)FDD
8)IDE
9)SATAII0/1/2/3/4/5
10)PWR_LED
11)F_PANEL
5
16
8
99
7
10
19
18
11
21
4
12)F_AUDIO
13)CD_IN
14)SPDIF_IN
15)SPDIF_OUT
16)F_USB1/F_USB2
17)F1_1394
18)LPT
19)COMA
20)BAT
21)CI
22)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 cablehas been securely attached to the connector on the motherboard.
Hardware Installation- 21 -
1/2)ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all thecomponents on the motherboard. Before connecting the power connector, first make sure thepower supply is turned off and all devices are properly installed. The power connector possessesa foolproof design. Connect the power supply cable to the power connector in the correct orientation.The 12V power connector mainly supplies power to the CPU. If the 12V power connector is notconnected, the computer will not start.
•To meet expansion requirements, it is recommended that a power supply that can withstandhigh power consumption be used (500W or greater). If a power supply is used that does notprovide the required power, the result can lead to an unstable or unbootable system.
•The main power connector is compatible with power supplies with 2x10 powerconnectors. When using a 2x12 power supply, remove the protective cover from themain power connector on the motherboard. Do not insert the power supply cable into pinsunder the protective cover when using a 2x10 power supply.
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 3-pin (SYS_FAN2) and a 4-pin(SYS_FAN1) system fan headers, and a 3-pin power fan header (PWR_FAN). Most fan headerspossess a foolproof insertion design. When connecting a fan cable, be sure to connect it in thecorrect orientation (the black connector wire is the ground wire). The motherboard supports CPUfan speed control, which requires the use of a CPU fan with fan speed control design. For optimumheat dissipation, it is recommended that a system fan be installed inside the chassis.
CPU_FAN:
Pin No.Definition
1
CPU_FAN
1
SYS_FAN1
1
SYS_FAN2/PWR_FAN
1GND
2+12V / Speed Control
3Sense
4Speed Control
SYS_FAN1:
Pin No.Definition
1GND
2Speed Control
3Sense
4+5V
SYS_FAN2/PWR_FAN:
Pin No.Definition
1GND
2+12V
3Sense
6)NB_FAN (North Bridge Fan Header)
Connect the North Bridge fan cable to this header. The fan header has a foolproof insertion design.When connecting a fan cable, be sure to connect it in the correct orientation. Most fans are designedwith color-coded power connector wires. A red power connector wire indicates a positive connec-tion and requires a +12V voltage. The black connector wire is the ground wire.
Pin No.Definition
1
1GND
2+12V
3NC
•Be sure to connect fan cables to the fan headers to prevent your CPU, North Bridge andsystem from overheating. Overheating may result in damage to the CPU/North Bridge orthe system may hang.
•These fan headers are not configuration jumper blocks. Do not place a jumper cap on theheaders.
Hardware Installation- 23 -
7)FDD (Floppy Disk Drive Connector)
This connector is used to connect a floppy disk drive. The types of floppy disk drives supportedare: 360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a floppy disk drive, besure to locate pin 1 of the connector and the floppy disk drive cable. The pin 1 of the cable istypically designated by a stripe of different color.
33
34
1
2
8)IDE (IDE Connector)
The IDE connector supports up to two IDE devices such as hard drives and optical drives. Beforeattaching the IDE cable, locate the foolproof groove on the connector. If you wish to connect two IDEdevices, remember to set the jumpers and the cabling according to the role of the IDE devices (forexample, master or slave). (For information about configuring master/slave settings for the IDEdevices, read the instructions from the device manufacturers.)
40
39
GA-MA770-UD3/US3 Motherboard-24-
2
1
9)SATAII0/1/2/3/4/5 (SATA 3Gb/s Connectors)
The SATAconnectors conform to SATA3Gb/s standard and are compatible with SATA1.5Gb/sstandard. Each SATAconnector supports a single SATAdevice. The AMD SB700 controllersupports RAID 0, RAID 1 and RAID 10. Refer to Chapter 5, "Configuring SATAHard Drive(s)," forinstructions on configuring a RAID array.
Pin No.Definition
1GND
SATAII1
1
SATAII0
SATAII3
17
7
1
SATAII2
SATAII5
1
SATAII4
•A RAID 0 or RAID 1 configuration requires at least two hard drives. If more than two harddrives are to be used, the total number of hard drives must be an even number.
•A RAID 10 configuration requires at least four hard drives and the total number of harddrives must be an even number.
2TXP
3TXN
17
4GND
7
5RXN
6RXP
7GND
17
7
Please connect the L-shaped endof the SATA3Gb/s cable to yourSATAhard drive.
10)PWR_LED (System Power LED Header)
This header can be used to connect a system power LED on the chassis to indicate system powerstatus. The LED is on when the system is operating. The LED keeps blinking when the system isin S1 sleep state. The LED is off when the system is in S3/S4 sleep state or powered off (S5).
Pin No.Definition
1MPD+
1
2MPD-
3MPD-
System StatusLED
S0On
S1Blinking
S3/S4/S5Off
Hardware Installation- 25 -
11) F_PANEL (Front Panel Header)
Connect the power switch, reset switch, speaker and system status indicator on the chassis frontpanel to this header according to the pin assignments below. Note the positive and negative pinsbefore connecting the cables.
Message/Power/
Activity LED
•MSG (Message/Power/Sleep LED, Yellow):
System StatusLED
S0On
S1Blinking
S3/S4/S5Off
Connectstothe powerstatus indicatoronthe chassis front panel.TheLED is on when the system is operating. The LED keeps blinking whenthe system is in S1 sleep state. The LED is off when the system is inS3/S4 sleep state or powered off (S5).
•PW (Power Switch, Red):Connects to the power switch on the chassis front panel. You may configure the way to turn offyour system using the power switch (refer to Chapter 2, "BIOS Setup," "Power ManagementSetup," for more information).
•SPEAK (Speaker, Orange):Connects to the speaker on the chassis front panel. The system reports system startup statusby issuing a beep code. One single short beep will be heard if no problem is detected at systemstartup. If a problem is detected, the BIOS may issue beeps in different patterns to indicate theproblem. Refer to Chapter 5, "Troubleshooting," for information about beep codes.
•HD (Hard Drive Activity LED, Blue)Connects to the hard drive activity LED on the chassis front panel. The LED is on when the harddrive is reading or writing data.
•RES (Reset Switch, Green):Connects to the reset switch on the chassis front panel. Press the reset switch to restart thecomputer if the computer freezes and fails to perform a normal restart.
•NC (Purple):No connection
Sleep LED
21
Hard Drive
MSG+
HD+
MSG-
HD-
PowerSwitch
PW+
RES-
ResetSwitch
PW-
RES+
Speaker
SPEAK-
SPEAK+
20
19
NC
The front panel design may differ by chassis. A front panel module mainly consists ofpower switch, reset switch, power LED, hard drive activity LED, speaker and etc. Whenconnecting your chassis front panel module to this header, make sure the wire assign-ments and the pin assignments are matched correctly.
GA-MA770-UD3/US3 Motherboard-26-
12)F_AUDIO (Front Panel Audio Header)
The front panel audio header supports Intel High Definition audio (HD) and AC'97 audio. You mayconnect yourchassis front panel audio module tothis header. Make sure the wire assignments ofthe module connector match the pin assignments of the motherboard header. Incorrect connectionbetween the module connector and the motherboard header will make the device unable to workor even damage it.
For HD Front Panel Audio:
Pin No.Definition
9
10
21
1MIC2_L
2GND
3MIC2_R
4-ACZ_DET
5LINE2_R
6GND
7FAUDIO_JD
8No Pin
9LINE2_L
10GND
•The front panel audio header supports HD audio by default. If your chassis provides anAC'97 front panel audio module, refer to the instructions on how to activate AC'97 functioninalityvia the audio software in Chapter 5, "Configuring 2/4/5.1/7.1-Channel Audio."
•Audio signals will be present on both of the front and back panel audio connectionssimultaneously. If you want to mute the back panel audio (only supported when using an HDfront panel audio module), refer to Chapter 5, "Configuring 2/4/5.1/7.1-Channel Audio."
•Some chassis provide a front panel audio module that has separated connectors on eachwire instead of a single plug. For information about connecting the front panel audiomodule that has different wire assignments, please contact the chassis manufacturer.
13)CD_IN (CD In Connector, Black)
You may connect the audio cable that came with your optical drive to the header.
For AC'97 Front Panel Audio:
Pin No.Definition
1MIC
2GND
3MIC Power
4NC
5Line Out (R)
6NC
7NC
8No Pin
9Line Out (L)
10NC
Pin No.Definition
1CD-L
2GND
1
3GND
4CD-R
Hardware Installation- 27 -
14)SPDIF_IN (S/PDIF In Header, Red)
This header supports digital S/PDIF in and can connect to an audio device that supports digitalaudio out via an optional S/PDIF in cable. For purchasing the optional S/PDIF in cable, pleasecontact the local dealer.
Pin No.Definition
1Power
1
2SPDIFI
3GND
15)SPDIF_OUT (S/PDIF Out Header)
This header supports digital S/PDIF out and connects a S/PDIF digital audio cable (provided byexpansion cards) for digital audio output from your motherboard to certain expansion cards likegraphics cards and sound cards. For example, some graphics cards may require you to use aS/PDIF digital audio cable for digital audio output from your motherboard to your graphics card ifyou wish to connect an HDMI display to the graphics card and have digital audio output from theHDMI display at the same time. For information about connecting the S/PDIF digital audio cable,carefully read the manual for your expansion card.
GA-MA770-UD3/US3 Motherboard-28-
Pin No.Definition
1
1SPDIFO
2GND
16)F_USB1/F_USB2 (USB Headers, Yellow)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB portsvia an optional USB bracket. For purchasing the optional USB bracket, please contact the localdealer.
Pin No.Definition
10
9
2
1
1Power (5V)
2Power (5V)
3USB DX-
4USB DY-
5USB DX+
6USB DY+
7GND
8GND
9No Pin
10NC
•Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB header.
•Prior to installing the USB bracket, be sure to turn off your computer and unplug the
power cord from the power outlet to prevent damage to the USB bracket.
17)F1_1394 (IEEE 1394a Header, Gray)
The header conforms to IEEE 1394a specification. The IEEE 1394a header can provide one IEEE1394a port via an optional IEEE 1394a bracket. For purchasing the optional IEEE 1394a bracket,please contact the local dealer.
Pin No.Definition
1TPA+
2TPA-
10
9
2
1
3GND
4GND
5TPB+
6TPB-
7Power (12V)
8Power (12V)
9No Pin
10GND
•Do not plug the USB bracket cable into the IEEE 1394a header.
•Prior to installing the IEEE 1394a bracket, be sure to turn off your computer and unplug
the power cord from the power outlet to prevent damage to the IEEE 1394a bracket.
•To connect an IEEE 1394a device, attach one end of the device cable to your computerand then attach the other end of the cable to the IEEE 1394a device. Ensure that the cableis securely connected.
Hardware Installation- 29 -
18)LPT (Parallel Port Header)
The LPT header can provide one parallel port via an optional LPT port cable. For purchasing theoptional LPT port cable, please contact the local dealer.
2
1
Pin No.Definition
1STB-
2AFD-
3PD0
4ERR-
5PD1
6INIT-
7PD2
8SLIN-
9PD3
10GND
11PD4
12GND
13PD5
26
25
Pin No.Definition
14GND
15PD6
16GND
17PD7
18GND
19ACK-
20GND
21BUSY
22GND
23PE
24No Pin
25SLCT
26GND
19)COMA (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing theoptional COM port cable, please contact the local dealer.
Pin No.Definition
1NDCD-
10
2
1
9
2NSIN
3NSOUT
4NDTR-
5GND
6NDSR-
7NRTS-
8NCTS-
9NRI-
10No Pin
GA-MA770-UD3/US3 Motherboard-30-
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