AMD 880G User manual

USER'S MANUAL
Of
AMD 880G & AMD SB750
Based
M/B for AMD Socket AM3+ Series
Processor
Trademark:
* Specifications and information contained in this documentation are furnished for information use only, and are
subject to change at any time without notice, and should not be construed as a commitment by manufacturer.
NO. G03-TA98MG-F
Rev
： 2.0
Release date: November 2, 2011

ii
Environmental Safety Instruction
zAvoid the dusty, humidity and temperature extremes. Do not place the product in any
area where it may become wet.
z0 to 40 centigrade is the suitable temperature. (The figure comes from the request of
the main chipset)
zGenerally speaking, dramatic changes in temperature may lead to contact malfunction
and crackles due to constant thermal expansion and contraction from the welding
spots’ that connect components and PCB. Computer should go through an adaptive
phase before it boots when it is moved from a cold environment to a warmer one to
avoid condensation phenomenon. These water drops attached on PCB or the surface
of the components can bring about phenomena as minor as computer instability
resulted from corrosion and oxidation from components and PCB or as major as short
circuit that can burn the components. Suggest starting the computer until the
temperature goes up.
zThe increasing temperature of the capacitor may decrease the life of computer. Using
the close case may decrease the life of other device because the higher temperature in
the inner of the case.
zAttention to the heat sink when you over-clocking. The higher temperature may
decrease the life of the device and burned the capacitor.
Environmental Protection Announcement
Do not dispose this electronic device into the trash while discarding. To minimize pollution
and ensure environment protection of mother earth, please recycle.

ii
CHAPTER 1 INTRODUCTION OF AMD 880G MOTHERBOARDS
1-1 FEATURES OF MOTHERBOARD................................................................1
1-1-1 SPECIAL FEATURES OF MOTHERBOARD .................................2
1-2 SPECIFICATION...........................................................................................3
1-3 LAYOUT DIAGRAM......................................................................................4
CHAPTER 2 HARDWARE INSTALLATION
2-1 HARDWARE INSTALLATION STEPS .........................................................5
2-2 JUMPER SETTING .....................................................................................5
2-3 CPU INSTALLATION ..................................................................................6
2-3-1 ABOUT AMD AM3+ CPU SOCKET................................................6
2-3-2 CPU INSTALLATION GUIDE..........................................................6
2-4 MEMORY INSTALLATION .........................................................................7
2-5 EXPASION CARD INSTALLATION .............................................................8
2-5-1 EXPASION SLOTS .........................................................................8
2-5-2 PROCEDURE FOR EXPASION CARD INSTALLATION...............8
CHAPTER 3 CONNCTORS & HEADERS
3-1 I/O BACK PANEL CONNECTORS...............................................................9
3-2 INTERNAL CONNECTORS..........................................................................10
3-3 INTERNAL HEADERS..................................................................................11
CHAPTER 4 USEFUL HELP
4-1 HOW TO UPDATE BIOS ..............................................................................14
4-2 TROUBLE SHOOTING .................................................................................14
APPENDIX...................................................................................................................15
TABLE OF CONTENT

1
Chapter 1
Introduction of AMD 880G Motherboards
1-1 Features of motherboard
The AMD 880G chipset motherboard series are based on the latest AMD 880G
Chipset and the SB 750 chipset which supports the innovative AMD AM3+ FX
processors and AMD AM3 processor under 125W power consumption. With a
highly-scalable Hyper Transport technology-based system bus up to HT 3.0,
AMD880G Platform Processor Chipset motherboard series deliver the outstanding
system performance and professional desktop platform solution.
The AMD 880G Series motherboards are integrated DDRIII memory controller for
Dual channel DDRIII 800 /1066/ 1333 DDRIII Module up to 8GB. The motherboard is
embedded with SB 750 chipset which support up to four SATAII devices with RAID 0,
1, 5, 10 functions to accelerate hard disk drives and guarantee the data security
without failure in advanced computing performance.
The AMD 880G motherboards provide PCI-E Gigabit LAN chip which supports
10/100/1000Mbps data transfer rate. And the embedded 6-channel HD Audio CODEC
is fully compatible with Sound Blaster Pro standards that offer you with the home
cinema quality and satisfying software compatibility.
AMD 880G Series motherboards offer one PCI-Express 2.0x16 graphics slot that
delivers up to 8Gbyte/sec data transfer rate at each relative direction. The AMD880G
motherboards also carry one 32-bit PCI slot to guarantee rich connectivity for the I/O
peripheral devices.
Embedded USB controllers as well as capability of expanding to 8 of USB 2.0
functional ports delivering 480Mb/s bandwidth of rich connectivity, these
motherboards meet the future USB demands which are also equipped with hardware
monitor function on system to monitor and protect your system and maintain your
non-stop business computing.
Some special features--- CPU Smart Fan/CPU Thermal Throttling/CPU Vcore OC-CON
Solid Capacitors of this motherboard are designed for power user to use the
over-clocking function in more flexible ways. But please be caution that the
over-clocking maybe causes the fails in system reliabilities. This motherboard
provides the guaranteed performance and meets the demands of the next generation
computing. But if you insist to gain more system performance with variety possibilities
of the components you choose, please be careful and make sure to read the detailed
descriptions of these value added product features, please get them in the coming
section.

2
1-1-1 Special Features of Motherboard
CPU Smart Fan—Noise Management System
It’s never been a good idea to gain the performance of your system by sacrificing its
acoustics. CPU Smart Fan Noise Management System is the answer to control the
noise level needed for now-a-day’s high performance computing system. The system
will automatically increase the fan speed when CPU operating loading is high, after
the CPU is in normal operating condition, the system will low down the fan speed for
the silent operating environment. The system can provide the much longer life cycle
for both CPU and the system fans for game use and business requirements.
CPU Thermal Throttling Technology
To prevent the increasing heat from damage of CPU or accidental shutdown while at
high workload, the CPU Thermal Throttling Technology will force CPU to enter
partially idle mode from 87.5% to 12.5% according to preset CPU operating
temperature in BIOS (from 40℃to 90℃). When the system senses the CPU
operating temperature reaching the preset value, the CPU operating bandwidth will be
decreased to the preset idle percentage to cool down the processor. When at
throttling mode the beeper sound can be optionally selected to indicate it is in working.
CPU Vcore Input and Output adopt OC-CON solid capacitors. (High-polymer Solid
Electrolysis Aluminum Capacitors)
OC-CON solid capacitors make it possible for motherboard to work from 55 degrees
Centigrade below zero to 125 degrees centigrade.OC-CON capacitors possess
superior physical characteristics to prolong product life ten times than corresponding
motherboard without capacitors every time working temperature increases 20
degrees. Life of product of motherboard with solid capacitors declines only 10% of
those without solid capacitors as well under same conditions.

3
1-2 Specification
Spec Description
Design zU-ATX form factor; Size: 20 cm x 23 cm
Chipset zAMD 880G North Bridge Chipset
zAMD SB750 South Bridge Chipset
CPU Socket
zAMD AM3+ Socket
zSupport AMD AM3+ FX processors and AMD AM3
Phenom™ II processor/Athlon™ II X processor (CPU
power consumption should be under 125W)
zSupport HT 3.0
* for detailed CPU support information please visit our website
Memory Slot
z240-pin DDRIII Module slot x 2
zSupport 2pcs DDRIII 800/1066/1333 memory modules
expandable to 8GB
zDual channel supported
Expansion Slot
z1 pcs *PCI-Express 2.0 x16 by 16 lane slot
z1pcs * 32-bit PCI slot
SATA2 Ports RAID zSupports four SATAII devices providing 3.0 Gb/sec data
transfer rate and support RAID 0,1,5,10
Gigabit LAN Chip
zIntegrated PCI-E gigabit LAN chip
zSupport Fast Ethernet LAN function of providing
10/100/1000 Mbps data transfer rate
6-CH Audio z6-channel HD Audio Codec integrated
zAudio driver and utility included
BIOS z16MB Flash ROM BIOS
Multi I/O
zPS/2 keyboard & mouse port x1
zVGA connector x1 & DVI connector x1 & HDMI connector
x1
zUSB 2.0 port x 4 and USB 2.0 header x 2
zRJ-45 LAN Connector x1
zAudio connector x1
zFront panel audio header x1
zSerial port header x1
zHDMI_SPDIF header x1
zFront panel header x1
zPower LED header x1
zSpeaker header x 1
Item Checklist
zMotherboard
zDVD for motherboard utilities
zUser’s manual
zHard disk cable
zI/O back panel shied

4
1-3 Layout Diagram
AMD
Socket
A
M3+
A
TX Power Conn.
CPUFAN1 Header
Power LED Header
HDMI-SPDIF
Header
Front Panel
Audio Heade
r
Front Panel Header
Line-OUT
ATX 12V Power Conn.
Line-IN
MIC-IN
DDR3 Slot x2
(DDRIII1~DDRIII2)
JBAT
Gigabit LAN Chip
Audio Connector
6-CH
HD Audio Chi
p
PS/2 Keyboard
Port
DVI Port
VGA Port
Serial Port
Header
JP1
PCI Slot SATAII
Connectors
RJ-45 LAN Port
PS/2 Mouse
Port
AMD 880G
Chipset
PS/2 MS over
KB
p
orts
Speaker Heade
r
PCI Express 2.0 x16 by 16 Lane Slot
HDMI Port
USB 2.0 Ports
DVI Port
HDMI port
USB 2.0
Headers
SYSFAN2 Heade
r
RJ-45 Ove
r
USB 2.0 Ports
USB 2.0 Ports
AMD
SB 750 Chi
p
set
SYSFAN1
Header
VGA Port

5
Chapter 2
Hardware Installation
WARNING! Turn off your power when adding or removing expansion cards or
other system components. Failure to do so may cause severe
damage to both your motherboard and expansion cards.
2-1 Hardware Installation Steps
Before using your computer, you had better complete the following steps:
1. Check motherboard jumper setting
2. Install CPU and Fan
3. Install System Memory (DIMM)
4. Install Expansion cards
5. Connect hard disk and front panel /back panel cable
6. Connect ATX Power cable
7. Power-On and Load Standard Default
8. Reboot
9. Install Operating System
10. Install Driver and Utility
2-2 Jumper Setting
(1) CMOS RAM Clear (3-pin): JBAT1
A battery must be used to retain the motherboard configuration in CMOS RAM
short 1-2 pins of JBAT to store the CMOS data.
To clear the CMOS, follow the procedure below:
1. Turn off the system and unplug the AC power.
2. Remove ATX power cable from ATX power connector.
3. Locate JBAT and short pins 2-3 for a few seconds.
4. Return JBAT to its normal setting by shorting pins 1-2.
5. Connect ATX power cable back to ATX power connector.
Note: When should clear CMOS
1. Troubleshooting
2. Forget password
3. After over clocking system boot fail
CMOS RAM Clear Setting
2-3 Closed: Clear CMOS
JBATJBAT
1-2 Closed: Normal

6
(2) KB/USB Power on Function Enabled/Disabled: JP1
KB/USB Power On Setting
2-3 Closed: KB/USB Power ON Enabled
JP1
JP1
1-2 Closed: KB/USB Power ON Disable (Default)
2-3 CPU Installation
2-3-1 About AMD AM3+ CPU Socket
This motherboard provides an AM3+ socket that supports compatible AMD
AM3/AM3+ processor.
The CPU that comes with the motherboard should have a cooling FAN attached to
prevent overheating. If this is not the case, then purchase a correct cooling FAN
before you turn on your system.
WARNING! Be sure that there is sufficient air circulation across the processor’s
heatsink and CPU cooling FAN is working correctly, otherwise it may
cause the processor and motherboard overheat and damage, you
may install an auxiliary cooling FAN, if necessary.
To install a CPU, first turn off your system and remove its cover. Then find Pin-1
(small triangle indicator) of the CPU and make sure to install it matched with Pin-1
(small triangle indicator) of the CPU socket. See to it that system is turned off and the
installation direction is correct. If the installation direction is wrong, CPU can not be
installed into the socket. In this case do not try to force it into the socket, but to change
to the correct direction.
2-3-2 CPU Installation Guide
1. Locate CPU socket.
2. Find CPU socket
Pin-1(with small triangle
indicator).
3. Find CPU Pin-1
(with small triangle
indicator).

7
4. Open the socket by
pulling the level
sideways away from the
socket and then upwards
to a 90-degree angle.
5. Insert compatible CPU
into CPU socket and see
to it that CPU Pin-1
should be matched into
CPU socket Pin-1 during
installation.
6. Put the level to the
original place of the
socket. Make sure that
the notched corner
should point towards
the end of the level.
2-4 Memory Installation
This motherboard provides two 240-pin DDRIII DUAL INLINE MEMORY MODULES
(DIMM) socket for DDRIII memory expansion to maximum memory volume of 8 GB.
Valid Memory Configuration
Bank 240-Pin DIMM PCS Maximum Capacity
DDRIII1 DDRIII 800/1066/1333 X1 4GB
DDRIII2 DDRIII 800/1066/1333 X1 4GB
Total System Memory (Max 4 GB) 2 8GB
Recommend DIMM Module Combination ：
1. One DDRIII Memory Module ----Plug in DDRIII1
2. Two DDRIII Memory Modules---Plug in DDRIII1 and DDRIII 2 for Dual channel
function
Dual channel Limited!
1. Dual channel function only supports when 2 DDRIII memory modules plug in either both
DDRIII1 & DDRIII2.
2. Memory modules plugged in DDRIII1 & DDRIII2 must be of the same type, same size,
and same frequency for dual channel function.
Install DDRIII modules to your motherboard is not difficult, you can refer to figure
below to see how to install a 240-Pin DDRIII 800/1066/1333 module.
DDRIII2 (BANK2+BANK3)
DDRIII1 (BANK0+BANK1)
DDRIII1 & DDRIII2:
Dual Channel

8
NOTE! When you install DIMM module fully into the DIMM socket the eject tab should be
locked into the DIMM module very firmly and fit into its indention on both sides.
2-5 Expansion Card Installation
2-5-1 Expansion Slot
The board provides one PCI-Express2.0 x16@16 lane graphic slot offer 8Gbyte/sec
data transfer rate at each relative direction and up to 16Gbyte/sec concurrent
bandwidth at full speed. Fully compliant to the PCI Express Base Specification
revision2.0, support PCI Express VGA card, and other PCI Express devices. The
additional 32-bit PCI slot also guarantee the rich connectivity for the I/O of peripherals.
2-5-2 Procedure for Expansion Card Installation
1. Read the documentation for your expansion card and make any necessary
hardware or software setting for your expansion card such as jumpers.
2. Remove your computer’s cover and the bracket plate on the slot you intend to use.
3. Align the card’s connectors and press firmly.
4. Secure the card on the slot with the screen you remove above.
5. Replace the computer system’s cover.
6. Set up the BIOS if necessary.
7. Install the necessary software driver for your expansion card.
PCI-E 2.0x16 Slot@16-lane
32-bit PCI Slot

9
Chapter 3
Connectors & Headers
3-1 I/O Back Panel Connectors
(1) PS/2 Keyboard & Mouse Connectors: KB1
The green connector above is a standard PS/2 mouse connector for PS/2
mouse. This purple connector below is a standard PS/2 keyboard connector for
PS/2 keyboard.
(2) D-Sub 15-pin Connector: VGA
VGA connector is the 15-pin D-subminiature female connector; it is for the
display devices, such as the CRT monitor, LCD monitor and so on.
(3) Digital Visual Interface: DVI
This interface standard designed to maximize the visual quality of digital display
devices such as flat panel LCD computer displays and digital projectors.
(4) High-Definition Multimedia Interface: HDMI
This point-to-point interface is for audio and video signals designed as a
single-cable solution for home theater and consumer electronics equipment.
(5) USB 2.0 Port connector: USB from CN4/ UL1
USB 2.0 port is for user to attach USB 2.0 device to system.
(6) LAN Port connector: RJ-45 LAN from UL1
The connector is standard RJ45 connector for Network. It supports
10/100/1000Mbps data transfer rate.
(7) Audio Line-In, Line-Out, MIC Connector: AUDIO
These Connectors are 3 Phone-Jack for LINE-OUT, LINE-IN, and MIC audio
connections.
Line-in: (BLUE) Audio input to sound chip
Line-out: (GREEN) Audio output to speaker
MIC: (PINK) Microphone Connector
Line-OUT
Line-IN
MIC-IN
PS/2 Keyboard
Port
DVI Port
VGA Port
RJ-45 LAN Port
PS/2 Mouse
Port HDMI Port
USB 2.0 Ports

10
3-2 Internal Connectors
(1) Power Connector (24-pin block): ATXPWR1
ATX Power Supply connector: This is a new defined 24-pins connector that
usually comes with ATX case. The ATX Power Supply allows using soft power
on momentary switch that connect from the front panel switch to 2-pins Power
On jumper pole on the motherboard. When the power switch on the back of the
ATX power supply turned on, the full power will not come into the system board
until the front panel switch is momentarily pressed. Press this switch again will
turn off the power to the system board.
** We recommend that you use an ATX 12V Specification 2.0-compliant power
supply unit (PSU) with a minimum of 350W power rating. This type has 24-pin
and 4-pin power plugs.
** If you intend to use a PSU with 20-pin and 4-pin power plugs, make sure that the
20-pin power plug can provide at least 15A on +12V and the power supply unit
has a minimum power rating of 350W. The system may become unstable or may
not boot up if the power is inadequate.
** Please refer to Figure 1 for 20-pin power plug connection. Power plug and
motherboard power connectors has adopted key design to avoid installation
mistake through connection can be made easily if in the proper direction. If the
installation direction is incorrect and you make the connection by force both the
board and the power supply can be burned. Please see to it that the direction is
correct during installation.
Figure 1: 20-pin power plug Figure2: 24-pin power plug
Pin 1
ROW1 ROW2
24-Pin
ROW1 ROW2
Pin 1
20-Pin
PIN ROW1 ROW2
1 3.3V 3.3V
2 3.3V -12V
3 GND GND
4 5V Soft Power On
5 GND GND
6 5V GND
7 GND GND
8 Power OK -5V
9 +5V (for Soft Logic) +5V
10 +12V +5V
11 +12V +5V
12 +3V GND

11
(2) ATX 12V Power Connector (8-pin block): ATX12V
This is a new defined 8-pins connector that usually comes with ATX Power
Supply. The ATX Power Supply which fully supports Socket AM2+/AM3
processor must including this connector for support extra 12V voltage to
maintain system power consumption. Without this connector might cause
system unstable because the power supply can not provide sufficient current for
system.
Pin 1
(3) SATA2 Port connectors: SATA1/SATA2/SATA3/SATA4
These SATAII connectors support SATA 3Gb/s specification. Please connect
SATAII device to the connector with SATA cable. One connector supports one
SATA device.
Pin No. Defnition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND
3-3 Internal Headers
(1) Line-Out/MIC Header for Front Panel (9-pin): AUDIO1
These headers connect to Front Panel Line-out, MIC connector with cable.
Line-Out, MIC Headers
AUDIO
Pin 1
Lineout2-L Lineout2-R
Sense-FB
Audio-GND
LINE2-JD
Audio-JD
2
9
10
KEY
MIC2-L
MIC2-JD
MIC2-R

12
(2) USB 2.0 Port Headers (9-pin): USB1/USB2
These headers are used for connecting the additional USB 2.0 port plug. By
attaching an option USB cable, your can be provided with two additional USB
2.0 plugs affixed to the back panel.
USB Port Headers
Pin1
VCC
-DATA
GND
+DATA
VCC
OC
-DATA
GND
+DATA
(3) Speaker connector: SPEAK1
This 4-pin header connects to the case-mounted speaker. See the figure below.
(4) Power LED: PWR LED/PWRLED1
The Power LED is light on while the system power is on. Connect the Power
LED from the system case to this pin.
(5) HD Activity LED: HD LED
This header connects to the hard disk activity indicator light on the case.
(6) Reset switch: RESET
This 2-pin header connects to the case-mounted reset switch for rebooting your
computer without having to turn off your power switch. This is a preferred
method of rebooting in order to prolong the lift of the system’s power supply.
See the figure below.
(7) Power switch: PWR BTN
This 2-pin header connects to the case-mounted power switch to power
ON/OFF the system.
System Case Connections
HDLED
RESET
HDDLED+
GND
PWRLED+ PWR LED
PWRBTN
PWRBTN
PWRLED-
HDDLED-
RSTSW
NC
GND
JW FP
Pin 1
SPEAK
SPKR+
NC NC
SPK-
Pin1
PWRLED
Pin1
(8)FAN Power Headers: SYSFAN1 (3-pin), SYSFAN2 (3-pin), CPUFAN (4-pin)
These connectors support cooling fans of 350mA (4.2 Watts) or less, depending
on the fan manufacturer, the wire and plug may be different. The red wire should
be positive, while the black should be ground. Connect the fan’s plug to the
board taking into consideration the polarity of connector.

13
FAN Power Headers
SYSFAN2
SYSFAN1
CPUFAN
14
GND
+12
V
CPUFAN IN
CPUFAN
OUT
3
1
1
3
(9) Serial COM Port header: COM1
COM1 is the 9-pin block pin-header.
Serial COM Port 9-pin Block
Pin1
(10) HDMI-SPDIF Out header: HDMI_SPDIF
The SPDIF output is capable of providing digital audio to external speakers or
compressed AC3 data to an external Dolby digital decoder. Use this feature only
when your stereo system has digital input function. Some of the VGA Card need
connect SPDIF-IN Connector，so its HDMI Port can make sounds .
HDMI_SPDIF Header
1
GND
2
HDMI_SPDIF_OUT

14
Chapter 4
Useful Help
4-1 How to Update BIOS
Solution1: Updating BIOS under DOS:
1. Prepare a bootable disk. (You may make one by click START click RUN type SYS
A: click OK)
2. Download upgrade tools and the latest BIOS files of the motherboard from official
website and then make a copy of it to your bootable floppy disk after
decompressing these files
3. Insert the disk into A:,start your computer and then type in
“A:\xxxxxx.BAT”(xxxxxxx being the file name of the latest BIOS )
4. Type Enter to update and flash the BIOS. The system will restart automatically
when BIOS is upgraded.
Solution2: Updating BIOS under Windows operating system:
1. Download Windows version BIOS from our website.
2. Unzip the downloaded file.
3. Double click EXE file to activate it and follow on-screen instructions for further
operations.
4-2 Trouble Shooting
Problem Solution
No power to the system to the all
power light don’t illuminate, fan inside
power supply doesn’t turn on.
1. Make sure power cable is correctly
plugged in. 2. Replace cable. 3.
Contact technical support.
System inoperative. Keyboard lights
are on, power indicator lights are lit,
and hard drive is spinning.
Using ever pressure on both ends of
the DIMM, press down firmly until the
module snaps into places.
System doesn’t boot from hard disk
drive, can be booted from optical drive. 1. Check cable running from disk to disk controller board. .Make sure both
ends are securely plugged in, check
the drive type in the standard CMOS
setup. 2. Backing up the hard drive is
extremely important .All hard disks are
capable of breaking down at any time.
System only boots from optical
drive .Hard disk can be read and
applications can be used but booting
from hard disk is impossible.
1. Back up date and applications files.
2. Reformat the hard drive. Reinstall
applications and date using backup
disks.
Screen message says “Invalid
Configuration” or “CMOS Failure” Review system‘s equipment. Make sure correct information on is in setup.

15
Appendix
Subject 1: Regarding the Application of 3-Phase or 3+1 Phase
Power Supply Mold
As a result of the increasing power consumption demand from
many AMD CPUs in current market, we suggest not to use a CPU
that demands more than 65W power consumption at work for an
AMD CPU compliant board that comes with power supply design
as 3 phase or 3+1 phase mold and MOSFET design as working in
High SideX1 and Low SideX1 mold so as to avoid MOSFET getting
burned or other phenomena like a halted system or system
instability. So please take notice of the CPU you are using and make sure that it is one
that demand not more than 65 W to ensure long-term working order.
Note：
1. The relation between CPU Power Consumption Amount and Power Phase:
depending on difference in voltage rating, one-phase of power can provide
25~30W to the motherboard.
2. 3- Phase Power Supply Mold: motherboard with 3 inductances for CPU power
supply, and each inductance carries with it 2 MOSFET (6 MOSFETs in total)
(Figure1);3+1–Phase Power Supply Mold: motherboard with 4 inductances for
CPU power supply, and each inductance carries with it 2 MOSFET (8 MOSFETs
in total) (Figure2).
Figure 1
Figure 2
Solution：
We recommend users choose motherboards with power design of 4-phase, 4+1
phase or more for CPUs that demand 89W or 95W power consumption.
We recommend users choose motherboards with power design of 5-phase, 5+1
phase or more for CPUs that demand 125W or 140W power consumption.

16
Subject 2: Suggestion on choosing electric fan
Both the amount of electric current to MOSFET and the heat
produced from the motherboard go up as AMD’s CPU power
consumption increases. In this case we recommend users select a
CPU fan with air outlet towards MOSFET so that CPU fan can carry
away heat produced by MOSFET, for better heat dissipation effects.
At the same time we suggest using well-ventilated cases to maintain
temperature as 38 approximately inside℃. (38 is r℃ecommended by CPU
manufactures).
Figure 1---- CPU Fan can not blow off the heat produced by MOSFET. We suggest
not to using fans of this kind.
Figure 2---- CPU Fan can blow off the heat produced by MOSFET. We suggest using
fans of this kind.
Cool air flowing in
Hot air flowing out
MOSFET
Cool air flowing in
MOSFET
Hot air flowing out

17
Subject 3: Thunder Protection Feature
Introduction:
Thunder is such formidable natural force that it can render massive damage to electronic
products of all kinds. In thunderstorm season computer systems without powerful thunder
protection designs are vulnerable to electric surge damage. High-priced building with
thunder protection measures may be a good choice, but usually costly and with corners
uncovered. The best solution for both cybercafés owner and common users would be
Jetway Thunder Series motherboards.
Thunder Protection Technology from Jetway Thunder Series Motherboard
Jetway Thunder series motherboards are integrated with double thunder-protection walls,
one from network port and the other from LAN chip. When it thunders, the first
thunder-protection wall will analyze and recognize thunder surge in network cable and
transfer it to ground wire area. The second thunder-protection wall will protect against any
residual electric current or runaway electrons to ensure safety of network card and other
components of the motherboard.
Laboratory test statistics on IEC61000-4-5 (1.2-50us) standardized thunder electric surge
tests have verified that Jetway Thunder series motherboard can endure up to 9KV electric
surge and protect the system from possible thunder damage.
IEC61000-4-5 (1.2-50us) Standardized Thunder Electric Surge Laboratory Test
Medium rise time: T1=1.2us±30%, T2=50us±30%
Test1: Current Partial Discharge tests on Jetway Thunder Series Motherboards with double
Thunder-protection Walls.
Test Result: Each MB can endure up to 9KV voltage of electric surge. Some motherboards
will restart (mostly depends on LAN chip), but no damage occurs to motherboards or
components of the board. System works normally after a restart.
Test2: Current Partial Discharge tests on Motherboards without Thunder-protection function
Test Result: LAN chips are damaged when testing voltage reached to 5KV. System fails to
operate normally (in most cases systems can not access to network) after a restart.
Conclusion: Jetway’s Thunder Series motherboard can guard motherboard from thunder
electric surge damage with effect and ensure system security from as high as 9KV volts of
electric surge.
Bonus of Thunder-protection Motherboard
Jetway Thunder series motherboards adopt dual thunder protection walls to cover every
corner in network loops. Such a complete thunder protection provided to users, especially
cybercafés means less repair cost and more effective business time. Jetway Thunder series
can guard system stability with effect. With Jetway Thunder series motherboards, together
with reasonable disposal of electric wires, proper placing of electric devices, piped network
cables and other necessary thunder protection devices, your computer system will be intact
in thunderstorm weather.