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.
Documentation Classifications
In order to assist in the use of this product, GIGABYTE provides the following types of documentations:
For quick set-up of the product, read the Quick Installation Guide included with the product.
For detailed product information, carefully read the User's Manual.
For instructions on how to use GIGABYTE's unique features, read or download the
information on/from the Support\Motherboard\Technology Guide page on our website.
For product-related information, check on our website at:
http://www.gigabyte.com.tw
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:
GA-EP45-UD3LR or GA-EP45-UD3L motherboard
Motherboard driver disk
User's Manual
Quick Installation Guide
One IDE cable
Two SATA 3Gb/s cables
I/O Shield
• The box contents above are for reference only and the actual items shall depend on product package you obtain.
The box contents are subject to change without notice.
• The motherboard image is for reference only.
Optional Items
Floppy disk drive cable (Part No. 12CF1-1FD001-7*R)
2-port USB 2.0 bracket (Part No. 12CR1-1UB030-5*R)
2-port SATA power cable (Part No. 12CF1-2SERPW-0*R)
S/PDIF in cable (Part No. 12CR1-1SPDIN-0*R)
COM port cable (Part No. 12CF1-1CM001-3*R)
LPT port cable (Part No. 12CF1-1LP001-0*R)
- 6 -
GA-EP45-UD3LR/GA-EP45-UD3L Motherboard Layout
KB_MS
R_SPDIF
R_USB_1
R_USB_2
R_USB_3
USB_LAN
AUDIO
RTL8111C
CODEC
SPDIF_O
CD_IN
IT8718
F_AUDIO
SPDIF_I
PCI1
PCI2
ATX_12V
SYS_FAN1
PCIEX1_1
PCIEX1_2
PCIEX16
PCIEX1_3
PCIEX1_4
B_BIOS
M_BIOS
CLR_CMOS
LGA775
Intel® P45
CI
BAT
PHASE LED
DDR2_3
SATA2_3
SATA2_5
F_PANEL
PWR_FAN
ATX
FDD
DDR2_4
SATA2_0
SATA2_2
CPU_FAN
GA-EP45-UD3LR/GA-EP45-UD3L
DDR2_1
DDR2_2
Intel® ICH10R
Intel® ICH10
SATA2_4
JMicron 368
IDE
F_USB1
PWR_LED
SYS_FAN2
SATA2_1
COMA
Only for GA-EP45-UD3LR.
Only for GA-EP45-UD3L.
LPT
F_USB2
- 7 -
Block Diagram
4 PCI Express x1
PCIe CLK
(100 MHz)
x1
PCI Express Bus
ATA-133/100/66/
33 IDE Channel
1 PCI Express x16
PCIe CLK
(100 MHz)
PCI Express x16
x1 x1
x1
JMicron
PCI Bus
368
LAN
RJ45
RTL
8111C
x1
LGA775
Processor
Interface
®
Intel
P45
Intel® ICH10R
Intel® ICH10
CODEC
CPU CLK+/-
(400/333/266/200 MHz)
Host
DDR2 1366 /1066/
800/667 MHz
Dual Channel Memory
MCH CLK (400/333/266/200 MHz)
Dual BIOS
6 SATA 3Gb/s
12 USB Ports
LPC Bus
IT8718
Floppy
LPT Port
COM Port
2 PCI
PCI CLK
(33 MHz)
Only for GA-EP45-UD3LR.
Only for GA-EP45-UD3L.
MIC
Line-In
Line-Out
SPDIF In
SPDIF Out
Side Speaker Out
Surround Speaker Out
Center/Subwoofer Speaker Out
- 8 -
PS/2 KB/Mouse
Chapter 1Hardware Installation
1- 1Installation 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, 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.
.
Hardware Installation- 9 -
1- 2Product Specifications
TM
CPU Support for an Intel® Core
Intel® Core
TM
2 Quad processor/Intel® Core
Intel® Pentium® Dual-Core processor/Intel® Celeron® processor
in the LGA 775 package
(Go to GIGABYTE's website for the latest CPU support list.)
L2 cache varies with CPU
Front Side Bus 1600/1333/1066/800 MHz FSB
Chipset North Bridge: Intel® P45 Express Chipset
South Bridge: Intel® ICH10R/ICH10
Memory 4 x 1.8V DDR2 DIMM sockets supporting up to 16 GB of system memory
Dual channel memory architecture
Support for DDR2 1366/1066/800/667 MHz memory modules
(Go to GIGABYTE's website for the latest memory support list.)
Audio Realtek ALC888 codec
High Definition Audio
2/4/5.1/7.1-channel
Support for S/PDIF In/Out
Support for CD In
LAN 1 x Realtek 8111C chip (10/100/1000 Mbit)
Expansion Slots 1 x PCI Express x16 slot, running at x16
(The PCI Express x16 slot conforms to PCI Express 2.0 standard.)
4 x PCI Express x1 slots
2 x PCI slots
Storage Interface South Bridge:
-6 x SATA 3Gb/s connectors supporting up to 6 SATA 3Gb/s devices
-Support for SATA RAID 0, RAID 1, RAID 5 and RAID 10
JMicron 368 chip:
-1 x IDE connector supporting ATA-133/100/66/33 and up to 2 IDE devices
iTE IT8718 chip:
-1 x floppy disk drive connector supporting up to 1 floppy disk drive
USB Integrated in the South Bridge
Up to 12 USB 2.0/1.1 ports (8 on the back panel, 4 via the USB brackets
connected to the internal USB headers)
2 Extreme processor/
TM
2 Duo processor/
(Note 1)
Only for GA-EP45-UD3LR.
Only for GA-EP45-UD3L.
GA-EP45-UD3LR/UD3L Motherboard- 1 0 -
Internal Connectors 1 x 24-pin ATX main power connector
1 x 4-pin ATX 12V power connector
1 x floppy disk drive connector
1 x IDE connector
6 x SATA 3Gb/s connectors
1 x CPU fan header
2 x system fan headers
1 x power fan header
1 x front panel header
1 x front panel audio header
1 x CD In connector
1 x S/PDIF In header
1 x S/PDIF Out header
2 x USB 2.0/1.1 headers
1 x parallel port header
1 x serial port header
1 x power LED header
1 x chassis intrusion header
Back Panel 1 x PS/2 keyboard port
Connectors 1 x PS/2 mouse port
1 x coaxial S/PDIF Out connector
1 x optical S/PDIF Out connector
8 x USB 2.0/1.1 ports
1 x RJ-45 port
6 x audio jacks (Center/Subwoofer Speaker Out/Rear Speaker Out/Side
Speaker Out/Line In/Line Out/Microphone)
I/O Controller iTE IT8718 chip
Hardware Monitor System voltage detection
CPU/System temperature detection
CPU/System/Power fan speed detection
CPU overheating warning
CPU/System/Power fan fail warning
CPU/System fan speed control
(Note 2)
Hardware Installation- 11 -
BIOS 2 x 8 Mbit flash
Use of licensed AWARD BIOS
Support for DualBIOS
TM
PnP 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0b
Unique Features Support for @BIOS
Support for Q-Flash
Support for Virtual Dual BIOS
Support for Download Center
Support for Xpress Install
Support for Xpress Recovery2
Support for EasyTune
(Note 3)
Support for Dynamic Energy Saver Advanced
Support for Time Repair
Support for Q-Share
Bundled Software Norton Internet Security (OEM version)
Operating System Support for Microsoft® Windows® Vista/XP
Form Factor ATX 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 the CPU/System fan speed control function is supported will depend on the CPU/
System cooler you install.
(Note 3) Available functions in EasyTune may differ by motherboard model.
GA-EP45-UD3LR/UD3L Motherboard- 1 2 -
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 before
installing the CPU to prevent hardware damage.
• Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly. (Or you
may locate the notches on both sides of the CPU and alignment keys on the CPU socket.)
• 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 recommended that the system bus frequency be set beyond hardware specifications since it
does not meet the standard requirements for the peripherals. If you wish to set the frequency beyond the standard specifications, please do so according to your hardware
specifications including the CPU, graphics card, memory, hard drive, etc.
1-3-1 Installing the CPU
A. Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.
LGA775 CPU Socket
Alignment Key
Alignment Key
Pin One Corner of the CPU Socket
LGA 775 CPU
NotchNotch
Triangle Pin One Marking on the 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 Lever
Step 1:
Completely raise the CPU socket lever.
Step 3:
Remove the protective socket cover from the
load plate. (To protect the CPU socket, always
replace the protective socket cover when the
CPU is not installed.)
Step 5:
Once the CPU is properly inserted, replace
the load plate and push the CPU socket lever
back into its locked position.
Step 2:
Lift the metal load plate from the CPU socket.
(DO NOT touch socket contacts.)
Step 4:
Hold the CPU with your thumb and index
fingers. Align the CPU pin one marking (triangle)
with the pin one corner of the CPU socket (or
you may align the CPU notches with the socket
alignment keys) and gently insert the CPU
into position.
GA-EP45-UD3LR/UD3L Motherboard- 1 4 -
1-3-2 Installing the CPU Cooler
Follow the steps below to correctly install the CPU cooler on the motherboard. (The following procedure
uses Intel® boxed cooler as the example cooler.)
Male
Direction of
the Arrow Sign
on the Male
Push Pin
Push Pin
The Top
of Female
Push Pin
Female
Push Pin
Step 1:
Apply an even and thin layer of thermal grease
on the surface of the installed CPU.
Step 3:
Place the cooler atop the CPU, aligning the
four push pins through the pin holes on the
motherboard. Push down on the push pins
diagonally.
Step 2:
Before installing the cooler, note the direction
of the arrow sign on the male push pin.
(Turning the push pin along the direction of
arrow is to remove the cooler, on the contrary,
is to install.)
Step 4:
You should hear a "click" when pushing down each
push pin. Check that the Male and Female push pins
are joined closely. (Refer to your CPU cooler installation manual for instructions on installing the cooler.)
Step 5:
After the installation, check the back of the
motherboard. If the push pin is inserted as the
picture above, the installation is complete.
Step 6:
Finally, attach the power connector of the CPU
cooler to the CPU fan header (CPU_FAN) on
the motherboard.
Use extreme care when removing the CPU cooler because the thermal grease/tape between
the CPU cooler and CPU may adhere to the CPU. Inadequately removing the CPU cooler may
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 of
the 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 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.
1-4-1 Dual Channel Memory Configuration
This motherboard provides four DDR2 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 four DDR2 memory sockets are divided into two channels and each channel has two memory
sockets as following:
Due to chipset limitation, read the 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 that
memory of the same capacity, brand, speed, and chips be used and installed in the same
colored DDR2 sockets for optimum performance.
When memory modules of different capacity and chips are installed, a message which says
memory is operating in Flex Memory Mode will appear during the POST. Intel® Flex Memory
Technology offers greater flexibility to upgrade by allowing different memory sizes to be
populated and remain in Dual Channel mode/performance.
GA-EP45-UD3LR/UD3L Motherboard- 1 6 -
1-4-2 Installing 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 to
correctly install your memory modules in the memory sockets.
Step 1:
Note the orientation of the memory module. Spread the retaining
clips at both ends of the memory socket. Place the memory
module on the socket. As indicated in the picture on the left,
place your fingers on the top edge of the memory, push down
on the memory and insert it vertically into the memory socket.
Step 2:
The clips at both ends of the socket will snap into place when
the 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 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.
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 for
your 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 card
until it is fully inserted into the PCI Express x16
slot. Make sure the card is securely seated in
the slot and does not rock.
• Removing the Card:
Press the white latch at the end of the PCI Express x16 slot to release the
card and then pull the card straight up from the slot.
GA-EP45-UD3LR/UD3L Motherboard- 1 8 -
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 a PS/2
keyboard.
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.
Coaxial S/PDIF Out Connector
This connector provides digital audio out to an external audio system that supports digital coaxial
audio. Before using this feature, ensure that your audio system provides a coaxial digital audio in
connector.
USB Port
The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices such as an
USB keyboard/mouse, USB printer, USB flash drive and etc.
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.
Connection/
Speed LED
LAN Port
Activity LED
Connection/Speed LED:
StateDescription
Orange 1 Gbps data rate
Green100 Mbps data rate
Off10 Mbps data rate
Activity LED:
StateDescription
Blinking Data 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 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.
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 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.
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 ( ). Refer to the instructions on setting up a 2/4/5.1/
7.1-channel audio configuration in Chapter 5, "Configuring 2/4/5.1/7.1-Channel Audio."
GA-EP45-UD3LR/UD3L Motherboard- 2 0 -
1-7Internal Connectors
1
3
5
21
2
10
4
19
14
13
12
1)ATX_12V
2)AT X
3)CPU_FAN
4)SYS_FAN1/SYS_FAN2
5)PWR_FAN
6)FDD
7)IDE
8)SATA2_0/1/2/3/4/5
9)PWR_LED
10)F_AUDIO
11)F_PANEL
1716
187
15
11
9
12)CD_IN
13)SPDIF_I
14)SPDIF_O
15)F_USB1/F_USB2
16)LPT
17)COMA
18)CI
19)CLR_CMOS
20)BAT
21)PHASE LED
6
4
20
8
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.
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 the
components on the motherboard. Before connecting the power connector, first make sure the
power supply is turned off and all devices are properly installed. The power connector possesses
a 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 not
connected, the computer will not start.
• To meet expansion requirements, it is recommended that a power supply that can withstand
high power consumption be used (500W or greater). If a power supply is used that does not
provide the required power, the result can lead to an unstable or unbootable system.
• The main power connector is compatible with power supplies with 2x10 power
connectors. When using a 2x12 power supply, remove the protective cover from the
main power connector on the motherboard. Do not insert the power supply cable into pins
under the protective cover when using a 2x10 power supply.
ATX_12V :
3
1
ATX_12V
4
2
Pin No.Definition
1GND
2GND
3+12V
4+12V
12
24
131
ATX
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 2x12-pin A TX)
12 3.3V (Only for 2x12-pin ATX)
GA-EP45-UD3LR/UD3L Motherboard- 2 2 -
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 2x12-pin A TX)
24GND (Only for 2x12-pin ATX)
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 3-pin (SYS_FAN1) and a 4-pin
(SYS_FAN2) system fan headers, and a 3-pin power fan header (PWR_FAN). Most fan headers
possess a foolproof insertion design. When connecting a fan cable, be sure to connect it in the
correct orientation (the black connector wire is the ground wire). The motherboard supports CPU
fan speed control, which requires the use of a CPU fan with fan speed control design. For optimum
heat dissipation, it is recommended that a system fan be installed inside the chassis.
CPU_FAN:
SYS_FAN2:
SYS_FAN1/PWR_FAN:
1
Pin No.Definition
1GND
2Speed Control
3Sense
4Speed Control
Pin No.Definition
1GND
2Speed Control
3Sense
4+5V
Pin No.Definition
1GND
2+12V
3Sense
1
CPU_FAN
1
SYS_FAN2
1
SYS_FAN1
PWR_FAN
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from
overheating. Overheating may result in damage to the CPU or the system may hang.
• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the
headers.
6) FDD (Floppy Disk Drive Connector)
This connector is used to connect a floppy disk drive. The types of floppy disk drives supported
are: 360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a floppy disk drive, be
sure to locate pin 1 of the connector and the floppy disk drive cable. The pin 1 of the cable is
typically designated by a stripe of different color.
34
2
33
1
Hardware Installation- 23 -
7) IDE (IDE Connector)
The IDE connector supports up to two IDE devices such as hard drives and optical drives. Before
attaching the IDE cable, locate the foolproof groove on the connector. If you wish to connect two IDE
devices, remember to set the jumpers and the cabling according to the role of the IDE devices (for
example, master or slave). (For information about configuring master/slave settings for the IDE
devices, read the instructions from the device manufacturers.)
39
40
1
2
8) SATA2_0/1/2/3/4/5 (SAT A 3Gb/s Connectors)
The SATA connectors conform to SATA 3Gb/s standard and are compatible with SATA 1.5Gb/s standard. Each
SATA connector supports a single SATA device. The ICH10R controller supports RAID 0, RAID 1, RAID 5 and
RAID 10. Refer to Chapter 5, "Configuring SATA Hard Drive(s)," for instructions on configuring a RAID array.
Pin No.Definition
1GND
2TXP
3TXN
4GND
5RXN
6RXP
7GND
SATA2_3
SATA2_4
SATA2_5
7
7
7
1
1
1
SATA2_0
SATA2_1
SATA2_2
1
7
• A RAID 0 or RAID 1 configuration requires at least two hard drives. If more than two hard
drives are to be used, the total number of hard drives must be an even number.
• A RAID 5 configuration requires at least three hard drives. (The total number of hard
drives does not have to be an even number.)
• A RAID 10 configuration requires at least four hard drives and the total number of hard
drives must be an even number.
Only for GA-EP45-UD3LR.
GA-EP45-UD3LR/UD3L Motherboard- 2 4 -
Please connect the L-shaped end
of the SATA 3Gb/s cable to your
SATA hard drive.
8) SATA2_0/1/2/3/4/5 (SAT A 3Gb/s Connectors)
The SATA connectors conform to SATA 3Gb/s standard and are compatible with SATA 1.5Gb/s
standard. Each SATA connector supports a single SATA device.
Pin No.Definition
1GND
2TXP
3TXN
4GND
5RXN
6RXP
7GND
SATA2_3
SATA2_4
SATA2_5
7
7
7
1
1
1
SATA2_0
SATA2_1
SATA2_2
1
7
Please connect the L-shaped end
of the SATA 3Gb/s cable to your
SATA hard drive.
9) PWR_LED (System Power LED Header)
This header can be used to connect a system power LED on the chassis to indicate system power
status. The LED is on when the system is operating. The LED keeps blinking when the system is
in S1 sleep state. The LED is off when the system is in S3/S4 sleep state or powered off (S5).
Only for GA-EP45-UD3L.
Pin No.Definition
1MPD+
1
2MPD3MPD-
System Status LED
S0On
S1Blinking
S3/S4/S5Off
Hardware Installation- 25 -
10) F_AUDIO (Front Panel Audio Header)
The front panel audio header supports Intel High Definition audio (HD) and AC'97 audio. You may
connect your chassis front panel audio module to this header. Make sure the wire assignments of
the module connector match the pin assignments of the motherboard header. Incorrect connection
between the module connector and the motherboard header will make the device unable to work
or even damage it.
1MIC
2GND
3MIC Power
4NC
5Line Out (R)
6NC
7NC
8No Pin
9Line Out (L)
10NC
• The front panel audio header supports HD audio by default. If your chassis provides an
AC'97 front panel audio module, refer to the instructions on how to activate AC'97 functioninality
via 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 connections
simultaneously. If you want to mute the back panel audio (only supported when using an HD
front 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 each
wire instead of a single plug. For information about connecting the front panel audio
module that has different wire assignments, please contact the chassis manufacturer.
GA-EP45-UD3LR/UD3L Motherboard- 2 6 -
11) F_PANEL (Front Panel Header)
Connect the power switch, reset switch, speaker and system status indicator on the chassis front
panel to this header according to the pin assignments below. Note the positive and negative pins
before connecting the cables.
Message/Power/
Activity LED
Sleep LED
2
1
Hard Drive
MSG+
HD+
MSG-
HD-
Power
Switch
PW+
RES-
Reset
Switch
PW-
RES+
Speaker
SPEAK-
SPEAK+
20
19
NC
• MSG (Message/Power/Sleep LED, Yellow):
System Status L ED
S0On
S1Blinking
S3/S4/S5Off
Connects to the power status indicator o n the chassis front panel. The
LED is on when the system is operating. The LED keeps blinking when
the system is in S1 sleep state. The LED is off when the system is in
S3/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 off
your system using the power switch (refer to Chapter 2, "BIOS Setup," "Power Management
Setup," for more information).
• SPEAK (Speaker, Orange):
Connects to the speaker on the chassis front panel. The system reports system startup status
by issuing a beep code. One single short beep will be heard if no problem is detected at system
startup. If a problem is detected, the BIOS may issue beeps in different patterns to indicate the
problem. 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 hard
drive 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 the
computer if the computer freezes and fails to perform a normal restart.
• NC (Purple):
No connection
The front panel design may differ by chassis. A front panel module mainly consists of
power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When
connecting your chassis front panel module to this header, make sure the wire assignments and the pin assignments are matched correctly.
Hardware Installation- 27 -
12) CD_IN (CD In Connector, Black)
You may connect the audio cable that came with your optical drive to the header.
Pin No.Definition
1CD-L
2GND
3GND
1
4CD-R
13) SPDIF_I (S/PDIF In Header, Red)
This header supports digital S/PDIF in and can connect to an audio device that supports digital
audio out via an optional S/PDIF in cable. For purchasing the optional S/PDIF in cable, please
contact the local dealer.
GA-EP45-UD3LR/UD3L Motherboard- 2 8 -
1
Pin No.Definition
1Power
2SPDIFI
3GND
14) SPDIF_O (S/PDIF Out Header)
This header supports digital S/PDIF out and connects a S/PDIF digital audio cable (provided by
expansion cards) for digital audio output from your motherboard to certain expansion cards like
graphics cards and sound cards. For example, some graphics cards may require you to use a
S/PDIF digital audio cable for digital audio output from your motherboard to your graphics card if
you wish to connect an HDMI display to the graphics card and have digital audio output from the
HDMI display at the same time. For information about connecting the S/PDIF digital audio cable,
carefully read the manual for your expansion card.
Pin No.Definition
1SPDIFO
1
2GND
15) F_USB1/F_USB2 (USB Headers, Yellow)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports
via an optional USB bracket. For purchasing the optional USB bracket, please contact the local
dealer.
• 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.
Hardware Installation- 29 -
16) LPT (Parallel Port Header)
The LPT header can provide one parallel port via an optional LPT port cable. For purchasing the
optional LPT port cable, please contact the local dealer.
The COM header can provide one serial port via an optional COM port cable. For purchasing the
optional COM port cable, please contact the local dealer.