Advantech ASMB-781 User manual

User Manual
ASMB-781
LGA1155
Intel®Xeon®E3/ Core™ i3 ATX
Server Board with 2 PCIe x16
Expansion Slots

ASMB-781 User Manual ii
Copyright
The documentation and the software included with this product are copyrighted 2012
by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right
to make improvements in the products described in this manual at any time without
notice. No part of this manual may be reproduced, copied, translated or transmitted
in any form or by any means without the prior written permission of Advantech Co.,
Ltd. Information provided in this manual is intended to be accurate and reliable. How-
ever, Advantech Co., Ltd. assumes no responsibility for its use, nor for any infringe-
ments of the rights of third parties, which may result from its use.
Acknowledgements
AMI is a trademark of American Megatrends Inc.
IBM and PC are trademarks of International Business Machines Corporation.
Intel® Xeon, Core™ 2 Quad, Pentium® Dual Core and Celeron® are trademarks of
Intel® Corporation.
WinBond is a trademark of Winbond Corporation.
All other product names or trademarks are properties of their respective owners.
Part No. 2006S78100 Edition 1
Printed in China Jan 2012

iii ASMB-781 User Manual
A Message to the Customer
Advantech Customer Services
Each and every Advantech product is built to the most exacting specifications to
ensure reliable performance in the harsh and demanding conditions typical of indus-
trial environments. Whether your new Advantech equipment is destined for the labo-
ratory or the factory floor, you can be assured that your product will provide the
reliability and ease of operation for which the name Advantech has come to be
known.
Your satisfaction is our primary concern. Here is a guide to Advantech’s customer
services. To ensure you get the full benefit of our services, please follow the instruc-
tions below carefully.
Technical Support
We want you to get the maximum performance from your products. So if you run into
technical difficulties, we are here to help. For the most frequently asked questions,
you can easily find answers in your product documentation. These answers are nor-
mally a lot more detailed than the ones we can give over the phone.
So please consult this manual first. If you still cannot find the answer, gather all the
information or questions that apply to your problem, and with the product close at
hand, call your dealer. Our dealers are well trained and ready to give you the support
you need to get the most from your Advantech products. In fact, most problems
reported are minor and are easily solved over the phone.
In addition, free technical support is available from Advantech engineers every busi-
ness day. We are always ready to give advice on application requirements or specific
information on the installation and operation of any of our products.

ASMB-781 User Manual iv
Declaration of Conformity
FCC
This device complies with the requirements in part 15 of the FCC rules:
Operation is subject to the following two conditions:
This device may not cause harmful interference
This device must accept any interference received, including interference that
may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B dig-
ital device, pursuant to Part 15 of the FCC Rules. These limits are designed to pro-
vide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. 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. Opera-
tion of this device in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his/her own expense. The
user is advised that any equipment changes or modifications not expressly approved
by the party responsible for compliance would void the compliance to FCC regula-
tions and therefore, the user's authority to operate the equipment.
Caution! There is a danger of a new battery exploding if it is incorrectly installed.
Do not attempt to recharge, force open, or heat the battery. Replace the
battery only with the same or equivalent type recommended by the man-
ufacturer. Discard used batteries according to the manufacturer's
instructions.

v ASMB-781 User Manual
Memory Compatibility
ASMB-781 Ordering Information
Product Warranty (2 years)
Advantech warrants to you, the original purchaser, that each of its products will be
free from defects in materials and workmanship for two years from the date of pur-
chase.
This warranty does not apply to any products which have been repaired or altered by
persons other than repair personnel authorized by Advantech, or which have been
subject to misuse, abuse, accident or improper installation. Advantech assumes no
liability under the terms of this warranty as a consequence of such events.
Because of Advantech’s high quality-control standards and rigorous testing, most of
our customers never need to use our repair service. If an Advantech product is defec-
tive, it will be repaired or replaced at no charge during the warranty period. For out-
of-warranty repairs, you will be billed according to the cost of replacement materials,
service time and freight. Please consult your dealer for more details.
If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For example, CPU
speed, Advantech products used, other hardware and software used, etc.) Note
anything abnormal and list any onscreen messages you get when the problem
occurs.
2. Call your dealer and describe the problem. Please have your manual, product,
and any helpful information readily available.
3. If your product is diagnosed as defective, obtain an RMA (return merchandise
authorization) number from your dealer. This allows us to process your return
more quickly.
4. Carefully pack the defective product, a fully-completed Repair and Replacement
Order Card and a photocopy proof of purchase date (such as your sales receipt)
in a shippable container. A product returned without proof of the purchase date
is not eligible for warranty service.
5. Write the RMA number visibly on the outside of the package and ship it prepaid
to your dealer.
Brand Size Speed Vendor PN Advantech PN ECC
Transcend 1GB 1333 MHz NA Yes 2GB 1333 MHz NA Yes
4GB 1333 MHz NA Yes
InnoDisk 4GB 1333 MHz NA Yes
Transcend 1GB 1333 MHz 96D3-1G1333NN-TR No
4GB 1333 MHz 96D3-4G1333NN-TR No
Apacer 2GB 1333 MHz 96D3-2G1333NN-AP No
4GB 1333 MHz 96D3-4G1333NN-AP No
ADATA 8GB 1333 MHz N/A No
Part Number Chipset Memory LAN IPMI
ASMB-781G2-00A1E C206 DDR3 ECC/Non-ECC 2 -
ASMB-781G4-00A1E C206 DDR3 ECC/Non-ECC 4 Yes

ASMB-781 User Manual vi
Initial Inspection
Before you begin installing your motherboard, please make sure that the following
materials have been shipped:
1 ASMB-781 Startup Manual
1 Driver CD (user’s manual is included)
2 Serial ATA HDD data cables
2 Serial ATA HDD power cables
1 I/O port bracket
1 Warranty card
If any of these items are missing or damaged, contact your distributor or sales repre-
sentative immediately. We have carefully inspected the ASMB-781 mechanically and
electrically before shipment. It should be free of marks and scratches and in perfect
working order upon receipt. As you unpack the ASMB-781, check it for signs of ship-
ping damage. (For example, damaged box, scratches, dents, etc.) If it is damaged or
it fails to meet the specifications, notify our service department or your local sales
representative immediately. Also notify the carrier. Retain the shipping carton and
packing material for inspection by the carrier. After inspection, we will make arrange-
ments to repair or replace the unit.

vii ASMB-781 User Manual
Contents
Chapter 1 Hardware Configuration......................1
1.1 Introduction ...............................................................................................2
1.2 Features....................................................................................................2
1.3 Specifications............................................................................................2
1.3.1 System..........................................................................................2
1.3.2 Memory.........................................................................................3
1.3.3 Input/Output..................................................................................3
1.3.4 Graphics........................................................................................3
1.3.5 Ethernet LAN ................................................................................3
1.3.6 Industrial Features........................................................................3
1.3.7 Mechanical and Environmental Specifications..............................3
1.4 Jumpers and Connectors..........................................................................4
Table 1.1: Jumper list..................................................................4
Table 1.2: Connector list..............................................................4
1.5 Board Layout: Jumper and Connector Locations......................................6
Figure 1.1 Jumper and Connector Locations...............................6
Figure 1.2 I/O connectors............................................................6
1.6 ASMB-781 Block Diagram ........................................................................7
Figure 1.3 ASMB-781 Block Diagram..........................................7
1.7 Safety Precautions....................................................................................7
1.8 Jumper Settings ........................................................................................8
1.8.1 How to set jumpers.......................................................................8
1.8.2 CMOS and ME clear (JCMOS1, JMECLR1).................................8
Table 1.3: JCMOS1, JMECLR1...................................................8
Table 1.4: JME1 ..........................................................................9
1.8.3 Watchdog timer output (JWDT1) ..................................................9
Table 1.5: Watchdog timer output (JWDT1)................................9
Table 1.6: ME update (JGREEN1)..............................................9
Table 1.7: USB power switch (JUSB_1, JUSB_2).......................9
Table 1.8: (CPUFAN_SEL1, SYSFAN_SEL1) ..........................10
Table 1.9: ATX/AT mode selector (PSON1)..............................10
Table 1.10:PCIe x16 slot switch (JCFG1) ..................................10
1.9 System Memory ......................................................................................10
1.10 Memory Installation Procedures..............................................................11
1.11 Cache Memory........................................................................................11
1.12 Processor Installation..............................................................................11
1.13 PCI Bus Routing Table............................................................................11
Chapter 2 Connecting Peripherals ....................13
2.1 Introduction .............................................................................................14
2.2 Parallel Port (LPT1).................................................................................14
2.3 USB Ports (LAN1_USB12, LAN2_USB3/4, USB5/6, USB7/8, USB9/10,
USB11/12)...............................................................................................15
2.4 USB Power Switch..................................................................................16
2.5 VGA Connector (VGA1)..........................................................................17
2.6 Serial Ports (COM1, COM2) ...................................................................17
2.7 PS/2 Keyboard and Mouse Connector (KBMS1)....................................18
2.8 External Keyboard & Mouse (KBMS2)....................................................18
2.9 CPU Fan Connector (CPUFAN1)............................................................19
2.10 System FAN Connector (SYSFAN1 through 4) ......................................19
2.11 Front Panel Connectors (JFP1) ..............................................................20
2.11.1 Power LED (JFP1)......................................................................20
Table 2.1: PS/2 or ATX power supply LED status....................20

ASMB-781 User Manual viii
2.11.2 External Speaker (JFP1 pins 10, 12, 14, 16).............................. 20
2.11.3 HDD LED Connector (JFP1 pins 5 & 7)...................................... 20
2.11.4 ATX Soft Power Switch (JFP1 pins 1 & 3).................................. 21
2.11.5 Reset Connector (JFP1 pins 2 & 4)............................................ 21
2.12 8-pin Alarm Board Connector (VOLT1)................................................... 21
2.13 Case Open Connector (JFP1 pin 6 & 8) ................................................. 22
2.14 Front Panel LAN Indicator Connector (LAN_LED1 and LAN_LED2)...... 22
Table 2.2: Front Panel LAN Indicator Connector ...................... 22
2.15 Serial ATA Interface (SATA1, SATA2, SATA3, SATA4, SATA5 & SATA6)
23
2.16 PCI Slots (PCI 1,2,5)............................................................................... 24
2.17 PCIe x16 Expansion Slot (PCIE4 and PCIE6)........................................ 24
2.18 PCIEX4_1............................................................................................... 25
2.19 PCIEX1_1............................................................................................... 25
2.20 Auxiliary 8-pin power connector (ATX8P_P1)......................................... 26
2.21 SPI Flash connector(SPI_CN1) .............................................................. 26
2.22 Low Pin Count Connector (LPC1)........................................................... 27
Table 2.3: Advantech LPC Module List..................................... 27
Chapter 3 BIOS Operation................................. 29
3.1 Introduction............................................................................................. 30
Figure 3.1 Main setup screen................................................... 30
3.2 Entering BIOS Setup............................................................................... 30
3.2.1 Main Menu.................................................................................. 31
Figure 3.2 Main setup screen.................................................... 31
3.2.2 System time / System date......................................................... 31
3.3 Advanced BIOS Features Setup............................................................. 32
Figure 3.3 Advanced BIOS features setup screen.................... 32
3.4 PCI Subsystem Settings ......................................................................... 33
Figure 3.4 PCI subsystem settings screen................................ 33
3.4.1 ACPI Settings ............................................................................. 34
Figure 3.5 ACPI Settings.......................................................... 34
3.4.2 Trusted Computing..................................................................... 35
Figure 3.6 TPM Settings............................................................ 35
3.4.3 CPU Configuration...................................................................... 36
Figure 3.7 CPU Configuration ................................................... 36
3.4.4 SATA Configuration.................................................................... 37
Figure 3.8 SATA Configuration.................................................. 37
3.4.5 Intel TXT(LT) Configuration........................................................ 38
Figure 3.9 Intel Trusted Execution Technology Configuration... 38
3.4.6 USB Configuration...................................................................... 39
Figure 3.10USB Configuration.................................................... 39
3.4.7 NCT6776 Super IO Configuration............................................... 40
Figure 3.11Super IO Configuration............................................. 40
Figure 3.12Serial Port 1 Configuration....................................... 40
Figure 3.13Serial Port 2 Configuration....................................... 41
Figure 3.14Parallel Configuration............................................... 41
3.4.8 H/W Monitor................................................................................ 42
Figure 3.15PC Health Status...................................................... 42
3.4.9 Serial Port Console Redirection.................................................. 43
Figure 3.16Serial Port Console Redirection............................... 43
3.5 Chipset.................................................................................................... 46
Figure 3.17Chipset..................................................................... 46
3.5.1 North Bridge................................................................................ 46
Figure 3.18North Bridge............................................................. 46
3.5.2 South Bridge............................................................................... 47
Figure 3.19South Bridge............................................................. 47
3.6 LAN Configuration................................................................................... 48

ix ASMB-781 User Manual
Figure 3.20LAN configuration screen.........................................48
3.6.1 USB Configuration......................................................................49
Figure 3.21USB Configuration....................................................49
3.7 Boot.........................................................................................................50
Figure 3.22Boot ..........................................................................50
3.8 Security ...................................................................................................51
Figure 3.23Security.....................................................................51
3.9 Save & Exit..............................................................................................52
Figure 3.24Save & Exit...............................................................52
Chapter 4 Chipset Software Installation Utility 53
4.1 Before you begin.....................................................................................54
4.2 Introduction .............................................................................................54
4.3 Windows XP / Windows 7 Driver Setup ..................................................55
Chapter 5 VGA Setup..........................................57
5.1 Introduction .............................................................................................58
5.2 Windows XP/Windows 7 Driver Setup ....................................................58
Chapter 6 LAN Configuration.............................59
6.1 Introduction .............................................................................................60
6.2 Features..................................................................................................60
6.3 Installation...............................................................................................60
6.4 Win XP /Win 7 Driver Setup (LAN)..........................................................60
A.1 Watchdog timer overview........................................................................62
A.2 Programming the Watchdog Timer.........................................................62
Table A.1: Watchdog timer registers..........................................64
A.2.1 Example Programs .....................................................................64
B.1 Parallel Port (LPT1).................................................................................70
Table B.1: Parallel Port (LPT1)..................................................70
B.2 USB Header (USB56, USB78, USB910) ................................................70
Table B.2: USB Header
(USB56,USB78,USB910,USB1112,USB1314)70
B.3 VGA Connector (VGA1)..........................................................................71
Table B.3: VGA Connector (VGA1) ...........................................71
B.4 RS-232 Interface (COM2) .......................................................................71
Table B.4: RS-232 Interface (COM1).........................................71
B.5 PS/2 Keyboard and Mouse Connector (KBMS1)....................................72
Table B.5: Keyboard and Mouse Connector (KBMS1)..............72
B.6 External Keyboard Connector (KBMS2) .................................................72
Table B.6: External Keyboard Connector (KBMS2)...................72
B.7 System Fan Power Connector (SYSFAN1~4) ........................................73
Table B.7: Fan Power Connector (SYSFAN1/SYSFAN2) .........73
B.8 Power LED (JFP1)..................................................................................73
Table B.8: Power LED (JFP1)....................................................73
B.9 External Speaker Connector (JFP1) .......................................................73
Table B.9: External Speaker Connector (JFP1).........................73
B.10 Reset Connector (JFP1) .........................................................................74
Table B.10:Reset Connector (JFP1)...........................................74
B.11 HDD LED Connector (JFP1)...................................................................74
Table B.11:HDD LED Connector (JFP1) ....................................74
B.12 ATX Soft Power Switch (JFP1) ...............................................................74
Table B.12:ATX Soft Power Switch (JFP1).................................74
B.13 Front panel SMBus connector (FP_SMB1).............................................74
Table B.13:Front panel SMBus connector(FP_SMB1)...............74

ASMB-781 User Manual x
B.14 USB/LAN ports (LAN1_USB12 and LAN2_USB34) ............................... 75
Table B.14:USB Port .................................................................. 75
Table B.15:Giga LAN 10/100/1000 Mbps RJ-45 port................ 75
B.15 Front Panel Audio Connector (FPAUD1)................................................ 76
Table B.16:Front Panel Audio Connector (FPAUD1) ................. 76
B.16 8-pin Alarm Board Connector (VOLT1)................................................... 76
Table B.17:8-pin Alarm Board Connector (VOLT1).................... 76
B.17 Case Open Connector (JFP1) ................................................................ 76
Table B.18:Case Open Connector (JFP1).................................. 76
B.18 Front Panel LAN LED Connector (LAN_LED1/2) ................................... 77
Table B.19:LAN LED Connector (LAN_LED1/2) ........................ 77
B.19 SPI_CN1: SPI flash card pin connector.................................................. 77
Table B.20:SPI_CN1:SPI fresh card pin connector.................... 77
B.20 System I/O Ports..................................................................................... 77
Table B.21:System I/O ports....................................................... 77
B.21 DMA Channel Assignments.................................................................... 78
Table B.22:DMA channel assignments....................................... 78
B.22 Interrupt Assignments............................................................................. 78
Table B.23:Interrupt assignments............................................... 78
B.23 1st MB Memory Map............................................................................... 79
Table B.24:1st MB memory map................................................ 79

Chapter 1
1Hardware
Configuration

ASMB-781 User Manual 2
1.1 Introduction
The ASMB-781 motherboard is the most advanced Intel® C206 board for industrial
server grade applications that require high-performance computing. The mother-
board supports 2nd generation Intel® Xeon® E3/ CoreTM i3 and DDR3 1066/1333
MHz memory up to 32 GB. ASMB-781 provides an ASPEED AST-1300/2300
onboard graphic controller, with 64MB onboard graphics VRAM.
ASMB-781 provides a mainstream PCIe x16 gen II expansion slot or 2 x PCIe x16
(x8 link) double-deck expansion cards for add-on graphic cards to meet higher graph-
ics performance demands. In addition, the ASMB-781 has four Gigabit Ethernet LAN
(G4 version) via dedicated PCIe bus, which offers bandwidth up to 300 MB/s, elimi-
nating network bottlenecks. High reliability and outstanding performance make the
ASMB-781 the ideal platform for industrial networking applications.
By using the Intel® C206 chipset, the ASMB-781 offers three 32-bit, 33 MHz PCI
slots; one PCIe x1 slot, one PCIe x4 slot, two PCIe x16 slot and a variety of features
such as 2 onboard SATA III interfaces (bandwidth = 600 MB/s) and 4 onboard SATA
II with software RAID; 12 USB 2.0 connectors. These powerful I/O capabilities ensure
even more reliable data storage capabilities and high-speed I/O peripheral connectiv-
ity.
The ASMB-781 also adopts Advantech’s unique, patented Sleep Mode Control Cir-
cuit for AT Power Mode. With all the excellent features and outstanding performance,
the ASMB-781 is the ideal platform for today’s industrial applications.
1.2 Features
PCIe architecture: The Intel® C206 PCH chipset supports 2 PCIe x16 slot, 1
PCIe x4 slot, 1 PCIe x1 slot, 2 SATA III and 4 SATA II connectors.
High Performance I/O capability: Four Gigabit LAN via PCIe bus, 3 PCI 32-bit/
33MHz PCI slots, and 12 USB 2.0 ports. (2*Type A USB2.0)
Standard ATX form factor with industrial features: ASMB-781 provides
industrial features like long product life, reliable operation under wide tempera-
ture range, watchdog timer functions, etc.
Automatic power on after power failure: It is often necessary to have an unat-
tended system come back into operation when power resumes after a power
failure. Advantech’s industrial motherboard allows users to set the system to
power on automatically without anyone hitting power button. Please refer to the
detailed "AT" mode settings in Table 1.5 of Section 1.8.3.
1.3 Specifications
1.3.1 System
SATA hard disk drive interface: Six on-board SATA III/II connectors support
Advanced Host Controller Interface (AHCI) technology and have data transmis-
sion rates up to 600 MB/s or 300 MB/s.
System Chipset: Intel® C206

3 ASMB-781 User Manual
Chapter 1 Hardware Configuration
1.3.2 Memory
RAM: Up to 32 GB in four 240-pin DIMM sockets. Supports dual-channel DDR3
ECC/Non-ECC 1066/1333 SDRAM.
1.3.3 Input/Output
PCIe slot: 2 PCIe x16 expansion slot, 1 PCIe x4 expansion slot, and 1 PCIe x1
expansion slot
PCI Bus: 3 PCI slots, 32-bit, 33 MHz PCI 2.2 compliant
Enhanced parallel port: Configured to LPT1 or disabled. Standard DB-25
female connector cable is a optional accessory. LPT1 supports EPP/SPP/ECP.
Serial port: Two serial ports. (COM1 is rear IO, COM2 is on board connector)
Keyboard and PS/2 mouse connector: One 6-pin mini-DIN connectors is
located on the mounting bracket for easy connection to PS/2 keyboard and
mouse.
USB port: Supports up to 12 USB 2.0 ports with transmission rates up to 480
Mbps.
LPC: One LPC connector to support Advantech LPC modules, such as TPM
module.
GPIO: ASMB-781 supports 8-bit GPIO from super I/O for general purpose con-
trol application.
1.3.4 Graphics
Chipset: Discrete VGA chip Aspeed AST2300/1300 onboard
Display memory: 64 GB
CRT: Up to 1920 x 1200 @ 60 Hz refresh rate
1.3.5 Ethernet LAN
Supports dual/four 10/100/1000 Mbps Ethernet port (s) via PCIe bus which pro-
vides a 300 MB/s data transmission rate.
Interface: 10/100/1000 Mbps
Controller: LAN1: Intel 82579LM; LAN2: Intel 82574L; LAN3/4: Intel 82580DB
(G4 version only).
1.3.6 Industrial Features
Watchdog timer: Can generate system reset or NC. The watchdog timer is pro-
grammable, with each unit equal to one second or one minute (255 levels).
1.3.7 Mechanical and Environmental Specifications
Operating temperature: 0 ~ 60° C (32 ~ 140° F, Depending on CPU)
Storage temperature: -40 ~ 85° C (-40 ~ 185° F)
Humidity: 5 ~ 95% non-condensing
Power supply voltage: +3.3 V, +5 V, ±12 V, 5 VSB
Power consumption:
Max. load: +3.3 V at 2.74 A, +5 V at 1.12A, +12 V at 0.08 A, +12 V(8P) at 4.86
A, +5 Vsb at 1.81A, -12 V at 0.01 A
Note! A 32-bit OS may not fully detect 4 GB of RAM when 4 GB is installed.

ASMB-781 User Manual 4
Board size: 304.8 x 228.6 mm (12" x 9.6")
Board weight: 0.5 kg (1.68 lb)
1.4 Jumpers and Connectors
Connectors on the ASMB-781 motherboard link it to external devices such as hard
disk drives and a keyboard. In addition, the board has a number of jumpers that are
used to configure your system for your application.
The tables below list the function of each of the jumpers and connectors. Later sec-
tions in this chapter give instructions on setting jumpers. Chapter 2 gives instructions
for connecting external devices to your motherboard.
Table 1.1: Jumper list
Label Function
JCMOS1 CMOS clear
JMECLR1 ME clear
JME1 ME update
JWDT1 Watch dog selection
JGREEN1 Deep sleep Sx mode
JUSB_1,JUSB_2 USB/KBMS normal(2-3)/standby power selection(1-2)
CPUFAN_SEL1,
SYSFAN_SEL1 FAN PWM(1-2)/DC mode selection(2-3)
PSON1 AT(1-2) / ATX(2-3)
JCFG1 PCI-E port (slot 6) assign to 1 x 16 link (Default) or 2 x 8 link for
riser card use
Table 1.2: Connector list
Label Function
ATX24P_P1 ATX 24 Pin main power connector (for System)
ATX8P_P1 Processor power connector (for CPU)
SATA1~SATA6 Serial ATA1~6
USB56,USB78,USB910 USB port 5,6,7,8,9,10 (Header)
USB11,USB12 USB port 11,12(USB type A)
PCI1,PCI2,PCI5 PCI slot
PCIE3 PCIE x4 slot
PCIE4,PCIE6 PCIE x16 slot
PCIE7 PCIE x1 slot
DIMMA0,DIMMA1,DIM
MB0,DIMMB1 DDR3 slot
CPUFAN1 CPU FAN connector
SYSFAN1,SYSFAN2,S
YSFAN3,SYSFAN4 System FAN connector
LAN1_USB12,LAN2_U
SB34 LAN1 / USB port 1, 2 stack connector LAN2 / USB port 3, 4 stack connector
LAN3_4 LAN 3,4 stack connector
VGA_COM1 VGA+COM connector
KBMS1 PS/2 keyboard and mouse connector
KBMS2 External keyboard and mouse connector(6 pin)

5 ASMB-781 User Manual
Chapter 1 Hardware Configuration
SPI1 SPI socket
SPI_CN1 SPI flash card pin header
LANLED1,LANLED2 LAN LED extension connector
FP_SMB1 Front panel SMBus header
IPMI1 IPMI header
GPIO1 GPIO header
FPAUD1 Audio front panel header
LPT1 Parallel port
COM2 Serial port: RS-232
JFP1 Front panel header
Table 1.2: Connector list

ASMB-781 User Manual 6
1.5 Board Layout: Jumper and Connector
Locations
Figure 1.1 Jumper and Connector Locations
Figure 1.2 I/O connectors

7 ASMB-781 User Manual
Chapter 1 Hardware Configuration
1.6 ASMB-781 Block Diagram
Figure 1.3 ASMB-781 Block Diagram
1.7 Safety Precautions
CPU
Sandy Bridge
LGA1155
Cougar Point
Platform Cntroller Hub
PCH FCBGA-942
C206
PCIE X16 SLOT-6
DMI
PCIe x16 Gen 2.0
LPC bus
CASE OPEN
Super I/O
NCT677 6F
2xCOMport
PS/2 KB, MS
SPI BIOS
64M-bit
PCIE X4 SLOT-3
33MHz PCI
PCI 1,2,5
PCIex1 Lane0~3
Gen 2.0
PCIex1 Lane6
Gen 2.0
PCIE X1 SLOT-7
LPT
PCIE X16 SLOT-4
PCIe x8Gen 2.0
switch X8X8
X8
X8
VGA
LPC Conn.
5xFAN
DDR3 240 PIN CHA
1066/1333 Non-ECC
600MB/s
Intel82579LM
GbE PHY
Intel 82574L
PCIe x1 Lane4
PCIe x1 Lane-5
RJ45
RJ45
DDR3 240 PIN CHB
1066/1333 Non-ECC
300MB/s
13 USB port
(4*rear; 6*onboard ; 2*type-A)
(1*AST2300)
USB 2.0
X2
X2
SATA 1 ~ 2
SATA 3~6
S/W RAID 0, 1, 10,5
ASPEED
AST2300
Dual RJ45
Intel 82580D B
GbE PHY
PCIe x4
USB
RMII
PCIE bus
Warning! Always completely disconnect the power cord from your chassis when-
ever you work with the hardware. Do not make connections while the
power is on. Sensitive electronic components can be damaged by sud-
den power surges. Only experienced electronics personnel should open
the PC chassis.
Caution! Always ground yourself to remove any static charge before touching the
motherboard. Modern electronic devices are very sensitive to static
electric discharges. As a safety precaution, use a grounding wrist strap
at all times. Place all electronic components on a static-dissipative sur-
face or in a static-shielded bag when they are not in the chassis.
Caution! The computer is provided with a battery-powered real-time clock circuit.
There is a danger of explosion if battery is incorrectly replaced. Replace
only with same or equivalent type recommended by the manufacturer.
Discard used batteries according to manufacturer’s instructions.

ASMB-781 User Manual 8
1.8 Jumper Settings
This section provides instructions on how to configure your motherboard by setting
the jumpers. It also includes the motherboard default settings and your options for
each jumper.
1.8.1 How to set jumpers
You can configure your motherboard to match the needs of your application by set-
ting the jumpers. A jumper is a metal bridge that closes an electrical circuit. It consists
of two metal pins and a small metal clip (often protected by a plastic cover) that slides
over the pins to connect them. To “close” (or turn on) a jumper, you connect the pins
with the clip. To “open” (or turn off) a jumper, you remove the clip. Sometimes a
jumper consists of a set of three pins, labeled 1, 2, and 3. In this case you connect
either pins 1 and 2, or 2 and 3. A pair of needle-nose pliers may be useful when set-
ting jumpers.
1.8.2 CMOS and ME clear (JCMOS1, JMECLR1)
The ASMB-781 motherboard contains a jumper that can erase CMOS data and reset
the system BIOS information. Normally this jumper should be set with pins 1-2
closed. If you want to reset the CMOS data, set J1 to 2-3 closed for just a few sec-
onds, and then move the jumper back to 1-2 closed. This procedure will reset the
CMOS to its default setting.
ME update (JME1)
The ASMB-781 contains a jumper that can update for ME firmware. Normally this
jumper should be set with pin 1-2 closed. If you want to update ME firmware, set
JME1 to 2-3 closed for new ME firmware update.
Caution! There is a danger of a new battery exploding if it is incorrectly installed.
Do not attempt to recharge, force open, or heat the battery. Replace the
battery only with the same or equivalent type recommended by the man-
ufacturer. Discard used batteries according to the manufacturer’s
instructions.
Table 1.3: JCMOS1, JMECLR1
Function Jumper Setting
* Keep CMOS and ME data
Clear CMOS and ME data
* default setting
1-2 closed
123
2-3 closed
123

9 ASMB-781 User Manual
Chapter 1 Hardware Configuration
1.8.3 Watchdog timer output (JWDT1)
The ASMB-781 contains a watchdog timer that will reset the CPU. This feature
means the ASMB-781 will recover from a software failure or an EMI problem. The
JWDT1 jumper settings control the outcome of what the computer will do in the event
the watchdog timer is tripped.
ME update (JGREEN1)
The ASMB-781 contains a jumper that can support energy saving for BIOS deep S5
feature. Normally this jumper should be set with pin 1-2 closed. If you want to disable,
set JGREEN1 to 2-3 closed for disable.
USB power switch (JUSB_1, JUSB_2)
The ASMB-781 contains a jumper that can support USB stand-by power when S5
mode, Normally this jumper should be set with pin 1-2 closed. If you want to disable,
set JUSB_1,JSUB_2 to 2-3 closed for disable.
Table 1.4: JME1
Function Jumper Setting
*Lock ME update 1-2 closed (add jumper diagram)
ME update 2-3 closed (add jumper diagram)
Table 1.5: Watchdog timer output (JWDT1)
Function Jumper Setting
*Reset
NC
* default setting
Note! The interrupt output of the watchdog timer is a low level signal. It will be
held low until the watchdog timer is reset.
Table 1.6: ME update (JGREEN1)
Function Jumper Setting
*Enable 1-2 closed (add jumper diagram)
Disable 2-3 closed (add jumper diagram)
Table 1.7: USB power switch (JUSB_1, JUSB_2)
Function Jumper Setting
*USB stand-by power 1-2 closed (add jumper diagram)
Normal 2-3 closed (add jumper diagram)
1-2 closed
123
2-3 closed
123

ASMB-781 User Manual 10
CPU,SYSTEM fan PWM/DC mode selection(CPUFAN_SEL1, SYSFAN_SEL1)
The ASMB-781 contains a jumper that can support PWM or DC mode, Normally this
jumper should be set with pin 1-2 closed. If you want to change to DC mode, set
CPUFAN_SEL1, SYSFAN_SEL1 to 2-3 closed for disable.
PCIe x16 slot(slot6) switch(JCFG1)
The ASMB-781 contains a jumper that can assign PCI-E port (slot 6) to 1 x 16 link
(Default) or 2 x 8 link for riser card use. Normally this jumper should be set with pin 1-
2 closed. If you want to support riser card, set JCFG1 to 2-3 closed.
1.9 System Memory
ASMB-781 has four 240-pin memory sockets for DDR3 ECC/Non-ECC 1066/1333
MHz memory modules with maximum capacity of 32GB (Maximum 8GB for each
DIMM).
Please note that both versions ASMB-781 do NOT support registered DIMMs
(RDIMMs).
Table 1.8: (CPUFAN_SEL1, SYSFAN_SEL1)
Function Jumper Setting
*PWM mode 1-2 closed (add jumper diagram)
DC mode 2-3 closed (add jumper diagram)
Table 1.9: ATX/AT mode selector (PSON1)
Function Jumper Setting
AT Mode
* ATX Mode
* default setting
Table 1.10: PCIe x16 slot switch (JCFG1)
Function Jumper Setting
*1 x 16 link 1-2 closed (add jumper diagram)
2 x 8 link 2-3 closed (add jumper diagram)
1-2 closed
123
2-3 closed
123
Brand Size Speed Vendor PN Advantech PN ECC
Transcend 1GB 1333 MHz NA Yes 2GB 1333 MHz NA Yes
4GB 1333 MHz NA Yes
InnoDisk 4GB 1333 MHz NA Yes
Transcend 1GB 1333 MHz 96D3-1G1333NN-TR No
4GB 1333 MHz 96D3-4G1333NN-TR No