DFI LanParty UT X38 Series, LanParty LT X38 Series User Manual

935-X38T21-004G
03210751A
System Board
User’s Manual
Copyright
This publication contains information that is protected by copyright. No part of it may be reproduced in any form or by any means or used to make any transfor­mation/adaptation without the prior written permission from the copyright holders.
This publication is provided for informational purposes only. The manufacturer makes no representations or warranties with respect to the contents or use of this manual and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. The user will assume the entire risk of the use or the results of the use of this document. Further, the manufacturer reserves the right to revise this publication and make changes to its contents at any time, without obligation to notify any person or entity of such revisions or changes.
© 2007. All Rights Reserved.
Trademarks
Windows® 2000 and Windows® XP are registered trademarks of Microsoft Corporation. Award is a registered trademark of Award Software, Inc. Other trademarks and registered trademarks of products appearing in this manual are
the properties of their respective holders.
FCC and DOC Statement on Class B
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equip­ment is operated in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio TV technician for help.
Notice:
1. The changes or modifications not expressly approved by the party responsi­ble for compliance could void the user's authority to operate the equipment.
2. Shielded interface cables must be used in order to comply with the emission limits.
Table of Contents
About this Manual................................................................................
Warranty.................................................................................................
Static Electricity Precaution................................................................
Safety Measures.....................................................................................
About the Package...............................................................................
Before Using the System Board.........................................................
System Board Layout............................................................................
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Introduction
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4
About this Manual
An electronic file of this manual is included in the CD. To view the user’s manual in the CD, insert the CD into a CD-ROM drive. The autorun screen (Main Board Utility CD) will appear. Click the “TOOLS” icon then click “Manual” on the main menu.
For additional information on the system board, please download the complete version of the manual from DFI’s website. Visit www. dfi.com.
Warranty
1. Warranty does not cover damages or failures that arised from misuse of the product, inability to use the product, unauthorized replacement or alteration of components and product specifications.
2. The warranty is void if the product has been subjected to physi­cal abuse, improper installation, modification, accidents or unau­thorized repair of the product.
3. Unless otherwise instructed in this user’s manual, the user may not, under any circumstances, attempt to perform service, adjust­ments or repairs on the product, whether in or out of warranty. It must be returned to the purchase point, factory or authorized service agency for all such work.
4. We will not be liable for any indirect, special, incidental or consequencial damages to the product that has been modified or altered.
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Introduction
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Static Electricity Precautions
It is quite easy to inadvertently damage your PC, system board, components or devices even before installing them in your system unit. Static electrical discharge can damage computer components without causing any signs of physical damage. You must take extra care in handling them to ensure against electrostatic build-up.
1. To prevent electrostatic build-up, leave the system board in its anti-static bag until you are ready to install it.
2. Wear an antistatic wrist strap.
3. Do all preparation work on a static-free surface.
4. Hold the device only by its edges. Be careful not to touch any of the components, contacts or connections.
5. Avoid touching the pins or contacts on all modules and connectors. Hold modules or connectors by their ends.
Important:
Electrostatic discharge (ESD) can damage your processor, disk drive and other components. Perform the upgrade instruction procedures described at an ESD workstation only. If such a station is not available, you can provide some ESD protection by wearing an antistatic wrist strap and attaching it to a metal part of the system chassis. If a wrist strap is unavailable, es­tablish and maintain contact with the system chassis throughout any procedures requiring ESD protection.
Safety Measures
To avoid damage to the system:
•Use the correct AC input voltage range
..
..
.
To reduce the risk of electric shock:
Unplug the power cord before removing the system chassis cover for installation or servicing. After installation or servicing, cover the system chassis before plugging the power cord.
Battery:
Danger of explosion if battery incorrectly replaced.
Replace only with the same or equivalent type recommend
by
the manufacturer.
Dispose of used batteries according to local ordinance.
Introduction
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6
About the Package
The system board package contains the following items. If any of these items are missing or damaged, please contact your dealer or sales representative for assistance.
; One system board ; One Bernstein audio module with cable ; One Transpiper kit (LP UT X38-T2R/T3R only)
- One Tr anspiper
- One 90o metal pipe
- One thermal paste
; One copper plate with mounting screws (LP UT X38-T2R/T3R only) ; One Northbridge heat sink cooling kit (LP LT X38-T2R/T3R only) ; One IDE round cable ; One floppy round cable ; Four Serial ATA data cables ; Four Serial ATA power cables ; One I/O shield ; One RAID driver diskette ; One “Mainboard Utility” CD ; One user’s manual
The system board and accessories in the package may not come similar to the information listed above. This may differ in accordance to the sales region or models in which it was sold. For more infor­mation about the standard package in your region, please contact your dealer or sales representative.
Before Using the System Board
Before using the system board, prepare basic system components.
If you are installing the system board in a new system, you will need at least the following internal components.
A CPU
Memory module
Storage devices such as hard disk drive, CD-ROM, etc.
You will also need external system peripherals you intend to use which will normally include at least a keyboard, a mouse and a video display monitor.
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Introduction
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System Board Layout
LP UT X38-T2R/T3R
Introduction
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8
LP LT X38-T2R/T3R
Note:
The illustrations on the following pages are based on the LP UT X38­T2R/T3R system board.
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Chapter 1 - Specifications
Processor
Chipset
System Memory
Expansion Slots
BIOS
Audio
• LGA 775 socket for:
- Intel® CoreTM2 Quad and Intel® CoreTM2 Duo
• Supports Intel Enhanced Memory 64 Technology (EMT64T)
• Supports Enhanced Intel SpeedStep Technology (EIST)
• Supports Intel Hyper-Threading Technology
• Supports 1333*/1066/800MHz system bus speed *Available only on CPUs that support 1333MHz FSB
• Intel
®
chipset
- Northbridge: Intel® X38 Express chipset (with Intel® Fast
Memory Access technology)
- Southbridge: Intel® ICH9R
• LP UT/LT X38-T2R
- Four 240-pin DDR2 DIMM sockets
- Supports DDR2 667/800 MHz
- Delivers up to 12.8Gb/s bandwidth
• LP UT/LT X38-T3R
- Four 240-pin DDR3 DIMM sockets
- Supports DDR3 800/1066/1333 MHz
- Delivers up to 21Gb/s bandwidth at 1333MHz
• Supports dual channel (128-bit wide) memory interface
• Supports up to 8GB system memory
• Supports unbuffered x8 and x16 DIMMs
• 2 PCI Express (Gen 2) x16 slots (PCIE 1 and PCIE 3)
- 2-way CrossFire at x16/x16 bandwidth
- 2-way CrossFire + Physics at x16/x16/x4 bandwidth
• 1 PCI Express x1 slot (PCIE 2)
• 1 PCI Express x4 slot (PCIE 4)
• 3 PCI slots
• Award BIOS
• 8Mbit flash memory
• CMOS Reloaded
• Bernstein audio module
- Realtek ALC885 8-channel High Definition Audio CODEC
- Center/subwoofer, rear R/L and side R/L jacks
- Line-in, line-out (front R/L) and mic-in jacks
- 2 coaxial RCA S/PDIF-in/out jacks
- 1 optical S/PDIF connector
- 1 CD-in connector
- 1 front audio connector
• DAC SNR/ADC SNR of 106dB/101dB
• Full-rate lossless content protection technology
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LAN
Storage
IEEE 1394
Rear Panel I/O
Internal I/O
Power Management
Hardware Monitor
PCB
• Marvell 88E8052 and Marvell 88E8053 PCIE Gigabit LAN controllers
• Fully compliant to IEEE 802.3 (10BASE-T), 802.3u (100BASE­TX) and 802.3ab (1000BASE-T) standards
• Intel ICH9R chip
- Intel Matrix Storage technology
- Supports up to 6 SATA devices
- SATA speed up to 3Gb/s
- RAID 0, RAID 1, RAID 0+1 and RAID 5
• JMicron JMB363 PCI Express to SATA and PATA host controller
- Supports up to 2 UltraDMA 100Mbps IDE devices
- Supports 2 SATA devices
- SATA speed up to 3Gb/s
- RAID 0 and RAID 1
• VIA VT6307
• Supports two 100/200/400 Mb/sec ports
• Mini-DIN-6 PS/2 mouse port and PS/2 keyboard port
• 1 IEEE 1394 port
• 6 USB 2.0/1.1 ports
• 2 RJ45 LAN ports
• 3 connectors for 6 additional external USB 2.0 ports
• 1 connector for an external COM por t
• 1 connector for an IEEE 1394 port
• 1 connector for the Bernstein audio module
• 1 front audio connector (on the Bernstein audio module)
• 1 CD-in connector (on the Bernstein audio module)
• 1 S/PDIF connector (on the Bernstein audio module)
• 1 IrDA connector and 1 CIR connector
• 8 Serial ATA connectors
• 1 40-pin IDE connector and 1 floppy connector
• 1 24-pin ATX power connector
• 1 8-pin 12V power connector
• 2 4-pin 5V/12V power connectors (FDD type)
• 1 front panel connector
• 6 fan connectors
• 1 diagnostic LED
• EZ touch switches (power switch and reset switch)
• ACPI and OS Directed Power Management
• ACPI STR (Suspend to RAM) function
• Wake-On-PS/2 / Wake-On-USB Keyboard/Mouse
• Wake-On-LAN and Wake-On-Ring
• RTC timer to power-on the system
• AC power failure recovery
• Monitors CPU/system/Northbridge temperature and overheat alarm
• Monitors Vcore/Vdimm/Vnb/VCC5/12V/V5sb/Vbat voltages
• Monitors the speed of the cooling fans
• CPU Overheat Protection function monitors CPU temperature and fan during system boot-up - automatic shutdown upon sys­tem overheat
• 6 layers, ATX form factor; 24.5cm (9.64") x 30.5cm (12")
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Chapter 2 - Hardware Installation
Jumper Settings
If you encounter the following,
a) CMOS data becomes corrupted. b) You forgot the supervisor or user password. c) The overclocked settings in the BIOS resulted to the system’s in-
stability or caused system boot up problems.
you can reconfigure the system with the default values stored in the ROM BIOS.
To load the default values stored in the ROM BIOS, please follow the steps below.
1. Power-off the system then unplug the power cord.
2. Set JP2 pins 2 and 3 to On. Wait for a few seconds and set JP2 back to its default setting, pins 1 and 2 On.
3. Now plug the power cord then power-on the system.
Clear CMOS Data
Clearing CMOS Data using JP2
2-3 On:
Clear CMOS Data
1-2 On: Normal
(default)
X
JP2
312 312
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Clearing CMOS Data using the EZ Clear® Function
EZ Clear® bypasses the manual process of using a jumper to clear the CMOS by simply using the reset and power buttons.
Important:
EZ Clear® is supported only if standby power is present in the system.
To use EZ Clear®:
1. Make sure the standby power is present.
2. Using the EZ touch switches on the system board, first press the Reset button then the Power button simultaneously for approxi­mately 4 seconds.
If the system board is already enclosed in a chassis, apply the same method using the Reset button and Power button located at the front panel of the chassis.
3. After 4 seconds, release the power button first then the Reset button.
4. The CMOS will restore the clock settings back to their default values.
X
Reset
Power
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PS/2 Power Select
Selecting 5VSB will allow you to use the PS/2 keyboard or PS/2 mouse to wake up the system.
X
JP7
2-3 On:
5VSB
1-2 On: 5V
(default)
31
2
312
USB Power Select
X
USB 6-11 (JP5)
X
USB 0-5 (JP6)
2-3 On:
5VSB
1-2 On: 5V
(default)
1
3 2
1
3 2
2-3 On:
5VSB
1-2 On: 5V
(default)
Selecting 5VSB will allow you to use the USB keyboard or USB mouse to wake up the system..
Important:
The 5VSB power source of your power supply must support 720mA.
Important:
If you are using the Wake-On-USB Keyboard/Mouse function for 2 USB ports, the 5VSB power source of your power supply must support 1.5A. For 3 or more USB ports, the 5VSB power source of your power supply must support 2A.
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The system board is equipped with a buzzer which serves as the PC’s speaker. By default the buzzer is “on” allowing you to hear the system’s beep messages and warnings. If you intend to use an exter­nal speaker, turn this function off by setting JP8 pins 1 and 2 to On.
Speaker On/Off Select
JP8
2-3 On:
Speaker On
(default)
1-2 On:
Speaker Off
Buzzer
312 312
X
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This jumper is used to safely reboot the system whenever the sys­tem hangs and you are unable to restart the system.
1. Power-off the system then unplug the power cord.
2. Set pins 2 and 3 to On. Wait for a few seconds then set the jumper back to its default setting, pins 1 and 2 On.
3. Plug the power cord then power-on the system. The system will reboot normally without losing all data stored in the CMOS.
Safe Boot
1-2 On:
Default
312 312
X
JP1
2-3 On:
Safe boot
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Secondary RTC Reset
When the RTC battery is removed, this jumper resets the manageability register bits in the RTC.
Note:
1. The SRTCRST# input must always be high when all other RTC power planes are on.
2. In the case where the RTC battery is dead or missing on the platform, the SRTCRST# pin must rise before the RSMRST# pin.
312
312
X
JP12
2-3 On:
RTC reset
1-2 On: Normal
(default)
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CPU FSB Select
X
JP15
1
3
2
JP13
JP14
By default, JP13 to JP15 are set to pins 1 and 2 On. This setting will allow the system to automatically run according to the CPU’s FSB. If you want to change the setting, please refer to the table below.
JP14
JP13
JP15
By CPU
1-2 On
1-2 On
1-2 On
FSB 800
3-4 On
2-3 On
2-3 On
FSB 1066
2-3 On
2-3 On
2-3 On
FSB 1333
2-3 On
2-3 On
3-4 On
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PS/2 Mouse and PS/2 Keyboard Ports
These ports are used to connect a PS/2 mouse and a PS/2 keyboard.
IEEE 1394 Ports
The IEEE 1394-0 port is used to connect audio/video devices or storage peripherals. The 10-pin connector allows you to connect an additional 1394 port. Your 1394 port may come mounted on a card-edge bracket. Install the card-edge bracket to an available slot at the rear of the system chassis then connect the 1394 port cable to this connector.
PS/2 Ports and IEEE 1394 Ports
W
1394-0
W
PS/2 Mouse
PS/2 KB
Rear Panel I/O Ports
PS/2
Mouse
PS/2
K/B
1394-0
USB 10-11
USB 8-9
USB 6-7
LAN 2LAN 1
1394-1
W
+12V (fused)
1
TPA+
Ground
TPB+
+12V (fused)
Key
TPA-
Ground
TPB-
Ground
2
10
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LAN 1
LAN 2
USB Ports and LAN Ports
USB Ports
The USB ports are used to connect USB 2.0/1.1 devices. The 10-pin connectors allow you to connect 6 additional USB 2.0/1.1 ports. Your USB ports may come mounted on a card-edge bracket. Install the card-edge bracket to an available slot at the rear of the system chassis then connect the USB port cables to these connectors.
LAN Ports
The LAN ports allow the system board to connect to a local area network by means of a network hub.
W
W
W
USB 9
USB 8
USB 7
USB 6
USB 11
USB 10
1
VCC
-Data
+Data
GND
Key
VCC
-Data
+Data
GND
N. C.
2
10
9
USB 4-5 USB 2-3
USB 0-1
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Bernstein Audio Module
Line-in Jack (Light Blue)
This jack is used to connect any audio devices such as Hi-fi set, CD player, tape player, AM/FM radio tuner, synthesizer, etc.
Line-out Jack (Lime)
This jack is used to connect to the front right and front left speakers of the audio system.
Mic-in Jack (Pink)
This jack is used to connect an external microphone.
Center/Subwoofer Jack (Orange)
This jack is used to connect to the center and subwoofer speakers of the audio system.
Rear Right/Left Jack (Black)
This jack is used to connect to the rear right and rear left speakers of the audio system.
Side Right/Left Jack (Gray)
This jack is used to connect to the side left and side right speakers of the audio system.
Line-in
Line-out
Mic-in
Center/
Subwoofer
Rear R/L
Side R/L
S/PDIF-in
S/PDIF-out
Side view
1
5
+5V
Key
SPDIF out
GND
SPDIF in
Optical S/PDIF
Bernstein audio module connector
12
10 9
Mic_Left
GND
Mic_Right
Vcc
Line out_Right
Mic Jet Detect
Sense
N. C.
Line out_LeftLine out Jet Detect
Front audio
CD-in
1
4
Right audio channel
Left audio channel
Ground Ground
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CD-in Connector
The CD-in connector is used to receive audio from a CD-ROM drive, TV tuner or MPEG card.
Front Audio Connector
The front audio connector is used to connect to the line-out and mic-in jacks that are at the front panel of your system.
Optical S/PDIF Connector
The optical S/PDIF connector is used to connect an external audio output device using an optical S/PDIF cable.
Important:
DO NOT use optical S/PDIF and coaxial RCA S/PDIF at the same time.
Installing the Bernstein Audio Module
1. The Bernstein audio module connects to the system board by means of the provided audio cable.
2. Insert one end of the cable to the Bernstein audio connector on the system board and the other end to the corre­sponding connector on the audio module.
X
Bernstein audio
module connector
1
2
11
12
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3. The length of the audio cable provides the option and flexibil­ity of installing the module on any available expansion bracket slot at the rear of the system chassis. Remove the screw of the bracket where you want the audio module installed then re­move the bracket. Place the Bernstein audio module on the expansion bracket slot then secure the module by replacing the bracket screw you removed earlier.
Audio cable
Serial ATA Connectors
The Serial ATA (SATA) connectors are used to connect Serial ATA drives. Connect one end of the Serial ATA cable to a Serial ATA connector and the other end to your Serial ATA device.
ICH9R supports SATA 1 to SATA 6.
JMB363 supports SATA 7 and SATA 8.
Configuring RAID
Refer to the RAID chapter in this manual for more information about creating RAID on Serial ATA drives.
SATA 1-2
SATA 7-8
I/O Connectors
SATA 5-6
SATA 3-4
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39
21
IDE
X
Floppy Disk Drive Connector and IDE Connector
Floppy Disk Drive Connector
The floppy disk drive connector is used to connect a floppy drive. Insert one end of the floppy cable into this connector and the other end-most connector to the floppy drive. The colored edge of the cable should align with pin 1 of this connector.
IDE Disk Drive Connector
The IDE disk drive connector is used to connect 2 IDE disk drives. An IDE cable have 3 connectors on them, one that plugs into this connector and the other 2 connects to IDE devices. The connector at the end of the cable is for the Master drive and the connector in the middle of the cable is for the Slave drive. The colored edge of the cable should align with pin 1 of this connector.
Note:
When using two IDE drives, one must be set as the master and the other as the slave. Follow the instructions provided by the drive manufacturer for setting the jumpers and/or switches on the drives.
X
FDD
34
33
1 2
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IrDA, CIR and Serial (COM) Connectors
IrDA and CIR Connectors
These connectors are used to connect an IrDA module and/or CIR module.
Note:
The sequence of the pin functions on some IrDA/CIR cable may be reversed from the pin function defined on the system board. Make sure to connect the cable connector to the IrDA/ CIR connector according to their pin functions.
You may need to install the proper drivers in your operating system to use the IrDA/CIR function. Refer to your operating system’s manual or documentation for more information.
Serial (COM) Connector
The serial (COM) connector is used to connect modems, serial printers, remote display terminals, or other serial devices. Your COM port may come mounted on a card-edge bracket. Install the card­edge bracket to an available slot at the rear of the system chassis then connect the serial port cable to this connector. The colored edge of the cable should align with pin 1 of this connector.
W
IrDA
CIR
51
VCC
N. C.
IRRX
Ground
IRTX
5
1
5VSB
N. C.
CIRRX
Ground
CIRTX
X
1
9
2
CD
TD
RD
DTR
GND
RTS
DSR
CTS
RI
COM
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Cooling Fan Connectors
These fan connectors are used to connect cooling fans. Cooling fans will provide adequate airflow throughout the chassis to prevent over­heating the CPU and system board components.
X
X
CPU fan
2nd fan
1st fan
X
3rd fan
System fan
13
Ground
Power
N. C.
X
X
X
EZ Touch Switches
The presence of the power switch and reset switch on the system board are user-friendly especially to DIY users. They provide conven­ience in powering on and/or resetting the system while fine tuning the system board before it is installed into the system chassis.
X
Sense
Power
Ground
Speed Control
1
4
13
Ground
Power
N. C.
13
Ground
Power
N. C.
1
3
Ground
Power
N. C.
13
Ground
Power
N. C.
NB fan
Reset Power
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LEDs
DRAM Power LED
This LED will light when the system’s power is on.
Standby Power LED
This LED will light when the system is in the standby mode.
Diagnostic LED
The Diagnostic LED displays POST codes. POST (Power-On Self Tests) which is controlled by the BIOS is performed whenever you power-on the system. POST will detect the status of the system and its components. Each code displayed on the LED corresponds to a certain system status.
Warning:
When the DRAM Power LED and/or Standby Power LED lit red, it indicates that power is present on the DIMM sockets and/or PCI slots. Power-off the PC then unplug the power cord prior to installing any memory modules or add-in cards. Failure to do so will cause severe damage to the motherboard and components.
.
.
.
.
.
.
.
.
DRAM Power LED
Standby
Power LED
Diagnostic
LED
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Power Connectors
Use a power supply that complies with the ATX12V Power Supply Design Guide Version 1.1. An ATX12V power supply unit has a standard 24-pin ATX main power connector that must be inserted into this connector.
Your power supply unit may come with an 8-pin or 4-pin +12V power connector. The +12V power enables the delivery of more +12VDC current to the processor’s Voltage Regulator Module (VRM). If available, it is preferable to use the 8-pin power; otherwise connect a 4-pin power to this connector.
X
+12V
Ground
14
58
X
131
12 24
+3.3VDC
+3.3VDC
COM
+5VDC
COM
+5VDC
COM
PWR_OK
+5VSB
+12VDC
+12VDC
+3.3VDC
+3.3VDC
-12VDC
COM
PS_ON#
COM
COM
COM
NC
+5VDC
+5VDC
+5VDC
COM
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The FDD-type power connectors are additional power connector.s If you are using more than one graphics cards, we recommend that you plug power cables from your power supply unit to the 5V/12V power connectors. This will provide more stability to the entire system. The system board will still work even if the additional power connector is not connected.
The system board requires a minimum of 300 Watt power supply to operate. Your system configuration (CPU power, amount of memory, add-in cards, peripherals, etc.) may exceed the minimum power requirement. To ensure that adequate power is provided, we
strongly recommend that you use a minimum of 400 Watt (or greater) power supply.
Important:
Insufficient power supplied to the system may result in instabil­ity or the add-in boards and peripherals not functioning properly. Calculating the system’s approximate power usage is important to ensure that the power supply meets the system’s consumption requirements.
1
4
+5V
+12V
Ground
Ground
The power connectors from the power supply unit are designed to fit the 24-pin and 8-pin connectors in only one orientation. Make sure to find the proper orientation before plugging the connectors.
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Restarting the PC
Normally, you can power-off the PC by:
1. Pressing the power button at the front panel of the chassis.
or
2. Pressing the power switch that is on the system board (note: not all system boards come with this switch).
If for some reasons you need to totally cut off the power supplied to the PC, switch off the power supply or unplug the power cord. Take note though that if you intend to restart it at once, please strictly follow the steps below.
1. The time where power is totally discharged varies among power supplies. It's discharge time is highly dependent on the system's configuration such as the wattage of the power supply, the se­quence of the supplied power as well as the number of periph­eral devices connected to the system. Due to this reason, we strongly recommend that you wait for the Standby Power LED (refer to the “LEDs” section in this chapter for the location of the Standby Power LED) to lit off.
2. After the Standby Power LED has lit off, wait for 6 seconds before powering on the PC.
If the system board is already enclosed in a chassis which appar­ently will not make the Standby Power LED visible, wait for 15 seconds before you restore power connections. 15 seconds is approximately the time that will take the LED to lit off and the time needed before restoring power.
The above will ensure protection and prevent damage to the motherboard and components.
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Front Panel Connectors
HD-LED: Primary/Secondary IDE LED
This LED will light when the hard drive is being accessed.
RESET: Reset Switch
This switch allows you to reboot without having to power off the system thus prolonging the life of the power supply or system.
SPEAKER: Speaker Connector
This connects to the speaker installed in the system chassis.
ATX-SW: ATX Power Switch
Depending on the setting in the BIOS setup, this switch is a “dual function power button” that will allow your system to enter the Soft­Off or Suspend mode.
X
1 2
19
20
HD-LED
RESET
SPEAKER
PWR-LED
ATX-SW
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