Nexcom EBC 354 User manual

NEXCOM International Co., Ltd.
NEXCOM International Co., Ltd.
Published April 2012 www.nexcom.com
Industrial Computing Solutions
Embedded Computing (3.5” CPU Board)
EBC 354
User Manual

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved ii EBC 354 User Manual
Contents
Contents
Preface iv
Copyright........................................................................................iv
Disclaimer........................................................................................iv
Acknowledgements.........................................................................iv
Regulatory Compliance Statements .................................................iv
Declaration of Conformity ...............................................................iv
RoHS Compliance.............................................................................v
Warranty and RMA..........................................................................vi
Safety Information.......................................................................... vii
Installation Recommendations ........................................................ vii
Safety Precautions ......................................................................... viii
Technical Support and Assistance.....................................................ix
Conventions Used in this Manual.....................................................ix
Global Service Contact Information ..................................................x
Package Contents........................................................................... xii
Ordering Information..................................................................... xiii
Chapter 1: Product Introduction 1
Overview......................................................................................... 1
Key Features.................................................................................... 1
Hardware Specifications .................................................................. 2
Knowing Your EBC 354 ................................................................... 5
Chapter 2: Jumpers and Connectors 6
Before You Begin............................................................................. 6
Precautions...................................................................................... 6
Jumper Settings............................................................................... 8
Locations of the Jumpers and Connectors........................................ 9
Jumpers......................................................................................... 10
CMOS Clear Select .............................................................. 10
Power Mode Select.............................................................. 10
LVDS Power Select ............................................................... 11
Panel Backlight Control Mode.............................................. 11
Connector Pin Definitions.............................................................. 12
External I/O Interfaces .......................................................... 12
DVI-I ......................................................................... 12
HDMI........................................................................ 12
USB0/1 Ports............................................................. 13
USB2/3 Ports............................................................. 13

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved iii EBC 354 User Manual
Contents
LAN1 Port ................................................................. 14
LAN2 Port ................................................................. 14
Internal Connectors .................................................. 15
CPU Fan Connector................................................... 15
COM1 Connector ..................................................... 15
COM2 Connector ..................................................... 16
COM3 Connector ..................................................... 16
COM4 Connector ..................................................... 17
SATA Power Connector ............................................. 17
SATA1 Connector...................................................... 18
SATA2 Connector...................................................... 18
SATA DOM Power Connector.................................... 19
PS/2 Keyboard/Mouse Connector.............................. 19
GPIO Connector........................................................ 20
SIM Card Connector ................................................. 20
Battery Connector..................................................... 21
SMBus Connector ..................................................... 22
Reset Button Connector............................................ 22
Power Button Connector........................................... 22
Line-out Connector................................................... 23
Mic-in Connector...................................................... 23
Speaker-out Connector ............................................. 24
LED Connector.......................................................... 24
USB4/5 JST Connector............................................... 25
LVDS Connector........................................................ 25
LVDS Backlight Connector......................................... 26
ATX Power Output Connector................................... 26
Mini-PCIe Slot ........................................................... 27
Block Diagram............................................................................... 28
Board Dimensions.......................................................................... 29
Chapter 3: BIOS Setup 30
About BIOS Setup................................................................ 30
When to Configure the BIOS................................................ 30
Default Configuration.......................................................... 31
Entering Setup..................................................................... 31
Legends............................................................................... 31
BIOS Setup Utility................................................................. 33
Main......................................................................... 33
Advanced.................................................................. 35
Chipset ..................................................................... 43
Boot.......................................................................... 45
Security..................................................................... 46
Save & Exit................................................................ 46
Appendix A: Watchdog Timer 48
WDT Programming Guide.............................................................. 48
Appendix B: GPI/O Programming Guide 50

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved iv EBC 354 User Manual
Preface
Preface
Copyright
This publication, including all photographs, illustrations and software, is
protected under international copyright laws, with all rights reserved. No
part of this manual may be reproduced, copied, translated or transmitted
in any form or by any means without the prior written consent from
NEXCOM International Co., Ltd.
Disclaimer
The information in this document is subject to change without prior notice
and does not represent commitment from NEXCOM International Co., Ltd.
However, users may update their knowledge of any product in use
by constantly checking its manual posted on our website:
http://www.nexcom.com. NEXCOM shall not be liable for direct, indirect,
special, incidental, or consequential damages arising out of the use of any
product, nor for any infringements upon the rights of third parties, which
may result from such use. Any implied warranties of merchantability or
fitness for any particular purpose is also disclaimed.
Acknowledgements
EBC 354 is a trademark of NEXCOM International Co., Ltd. All other
product names mentioned herein are registered trademarks of their
respective owners.
Regulatory Compliance Statements
This section provides the FCC compliance statement for Class B devices
and describes how to keep the system CE compliant.
Declaration of Conformity
FCC
This equipment has been tested and verified to comply with the limits for
a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are
designed to provide 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 instructions, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area (domestic environment) is likely to cause
harmful interference, in which case the user will be required to correct the
interference (take adequate measures) at their own expense.
CE
The product(s) described in this manual complies with all applicable
European Union (CE) directives if it has a CE marking. For computer

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved vEBC 354 User Manual
Preface
systems to remain CE compliant, only CE-compliant parts may be used.
Maintaining CE compliance also requires proper cable and cabling
techniques.
RoHS Compliance
NEXCOM RoHS Environmental Policy and Status Update
NEXCOM is a global citizen for building the digital
infrastructure. We are committed to providing
green products and services, which are compliant
with European Union RoHS (Restriction on Use
of Hazardous Substance in Electronic Equipment)
directive 2002/95/EU, to be your trusted green partner and to protect our
environment.
RoHS restricts the use of Lead (Pb) < 0.1% or 1,000ppm, Mercury (Hg)
< 0.1% or 1,000ppm, Cadmium (Cd) < 0.01% or 100ppm, Hexavalent
Chromium (Cr6+) < 0.1% or 1,000ppm, Polybrominated biphenyls (PBB) <
0.1% or 1,000ppm, and Polybrominated diphenyl Ethers (PBDE) < 0.1% or
1,000ppm.
In order to meet the RoHS compliant directives, NEXCOM has established
an engineering and manufacturing task force in to implement the
introduction of green products. The task force will ensure that we follow
the standard NEXCOM development procedure and that all the new RoHS
components and new manufacturing processes maintain the highest
industry quality levels for which NEXCOM are renowned.
The model selection criteria will be based on market demand. Vendors and
suppliers will ensure that all designed components will be RoHS compliant.
How to recognize NEXCOM RoHS Products?
For existing products where there are non-RoHS and RoHS versions, the
suffix “(LF)” will be added to the compliant product name.
All new product models launched after January 2006 will be RoHS
compliant. They will use the usual NEXCOM naming convention.

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved vi EBC 354 User Manual
Warranty and RMA
Warranty and RMA
NEXCOM Warranty Period
NEXCOM manufactures products that are new or equivalent to new in
accordance with industry standard. NEXCOM warrants that products will be
free from defect in material and workmanship for 2 years, beginning on the
date of invoice by NEXCOM. HCP series products (Blade Server) which are
manufactured by NEXCOM are covered by a three year warranty period.
NEXCOM Return Merchandise Authorization (RMA)
• Customers shall enclose the “NEXCOM RMA Service Form” with the
returned packages.
• Customers must collect all the information about the problems
encountered and note anything abnormal or, print out any on-screen
messages, and describe the problems on the “NEXCOM RMA Service
Form” for the RMA number apply process.
• Customers can send back the faulty products with or without accessories
(manuals, cable, etc.) and any components from the card, such as CPU
and RAM. If the components were suspected as part of the prob¬lems,
please note clearly which components are included. Otherwise,
NEXCOM is not responsible for the devices/parts.
• Customers are responsible for the safe packaging of defective products,
making sure it is durable enough to be resistant against further damage
and deterioration during transportation. In case of damages occurred
during transportation, the repair is treated as “Out of Warranty.”
• Any products returned by NEXCOM to other locations besides the
customers’ site will bear an extra charge and will be billed to the
customer.
Repair Service Charges for Out-of-Warranty Products
• NEXCOM will charge for out-of-warranty products in two categories,
one is basic diagnostic fee and another is component (product) fee.
System Level
• Component fee: NEXCOM will only charge for main components such as
SMD chip, BGA chip, etc. Passive components will be repaired for free,
ex: resistor, capacitor.
• Items will be replaced with NEXCOM products if the original one cannot
be repaired. Ex: motherboard, power supply, etc.
• Replace with 3rd party products if needed.
• If RMA goods can not be repaired, NEXCOM will return it to the
customer without any charge.
Board Level
• Component fee: NEXCOM will only charge for main components, such
as SMD chip, BGA chip, etc. Passive components will be repaired for
free, ex: resistors, capacitors.

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved vii EBC 354 User Manual
Warranty and RMA
• If RMA goods can not be repaired, NEXCOM will return it to the
customer without any charge.
Warnings
Read and adhere to all warnings, cautions, and notices in this guide
and the documentation supplied with the chassis, power supply, and
accessory modules. If the instructions for the chassis and power supply
are inconsistent with these instructions or the instructions for accessory
modules, contact the supplier to find out how you can ensure that your
computer meets safety and regulatory requirements.
Cautions
Electrostatic discharge (ESD) can damage system components. Do the
described procedures only at an ESD workstation. If no such station is
available, you can provide some ESD protection by wearing an antistatic
wrist strap and attaching it to a metal part of the computer chassis.
Safety Information
Before installing and using the device, note the following precautions:
• Read all instructions carefully.
• Do not place the unit on an unstable surface, cart, or stand.
• Follow all warnings and cautions in this manual.
• When replacing parts, ensure that your service technician uses parts
specified by the manufacturer.
• Avoid using the system near water, in direct sunlight, or near a heating
device.
• The load of the system unit does not solely rely for support from the
rackmounts located on the sides. Firm support from the bottom is highly
necessary in order to provide balance stability.
• 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 the same or equivalent type recommended by the
manufacturer. Discard used batteries according to the manufacturer’s
instructions.
Installation Recommendations
Ensure you have a stable, clean working environment. Dust and dirt can
get into components and cause a malfunction. Use containers to keep
small components separated.
Adequate lighting and proper tools can prevent you from accidentally
damaging the internal components. Most of the procedures that follow
require only a few simple tools, including the following:
• A Philips screwdriver
• A flat-tipped screwdriver
• A grounding strap
• An anti-static pad
Using your fingers can disconnect most of the connections. It is

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved viii EBC 354 User Manual
Warranty and RMA
recommended that you do not use needle-nose pliers to disconnect
connections as these can damage the soft metal or plastic parts of the
connectors.
Safety Precautions
1. Read these safety instructions carefully.
2. Keep this User Manual for later reference.
3. Disconnect the equipment from any AC outlet before cleaning or
installing a component inside the chassis. Use a damp cloth. Do not use
liquid or spray detergents for cleaning.
4. To prevent electrostatic build-up, leave the board in its anti-static bag
until you are ready to install it.
5. For plug-in equipment, the power outlet socket must be located near
the equipment and must be easily accessible.
6. Keep the board away from humidity.
7. Put the board on a stable surface. Dropping it or letting it fall may cause
damage.
8. Wear anti-static wrist strap.
9. Do all preparation work on a static-free surface.
10. Make sure the voltage of the power source is correct before
connecting the equipment to the power outlet.
11. Hold the board only by its edges. Be careful not to touch any of the
components, contacts or connections.
12. All cautions and warnings on the board should be noted.
13. Use the correct mounting screws and do not over tighten the screws.
14. Keep the original packaging and the anti-static bag; in case the board
has to be returned for repair or replacement.
Technical Support and Assistance
1. For the most updated information of NEXCOM products, visit
NEXCOM’s website at www.nexcom.com.
2. For technical issues that require contacting our technical support team
or sales representative, please have the following information ready
before calling:
- Product name and serial number
- Detailed information of the peripheral devices

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved ix EBC 354 User Manual
Warranty and RMA
- Detailed information of the installed software (operating system,
version, application software, etc.)
- A complete description of the problem
- The exact wordings of the error messages
Warning!
1. Handling the unit: carry the unit with both hands and handle it with
care.
2. Maintenance: to keep the unit clean, use only approved cleaning
products or clean with a dry cloth.
3. CompactFlash: Turn off the unit’s power before inserting or removing a
CompactFlash storage card.
Conventions Used in this Manual
Warning: Information about certain situations, which if not
observed, can cause personal injury. This will prevent injury
to yourself when performing a task.
Caution: Information to avoid damaging components or
losing data.
Note: Provides additional information to complete a task
easily.

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved xEBC 354 User Manual
Global Service Contact Information
Global Service
Contact
Information
Headquarters
Taiwan
15F, No. 920, Chung-Cheng Rd.,
ZhongHe District, New Taipei City,
23586,
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
http://www.nexcom.com.tw
USA
NEXCOM USA
3758 Spinnaker Court Fremont,
CA, 94538, USA
Tel: [phone]
Fax: [phone]
http://www.nexcom.com
France
NEXCOM France
Z.I. des Amandiers, 17,
Rue des entrepreneurs,
78420 Carrières sur Seine, France
Tel: [phone]
Fax: [phone]
http://www.nexcom.eu
Germany
NEXCOM GmbH
Leopoldstraße Business Centre,
Leopoldstraße 244, 80807 Munich, Germany
Tel: [phone]
Fax: [phone]
http://www.nexcom.eu
Italy
NEXCOM ITALIA S.r.l
Via Gaudenzio Ferrari 29,
21047 Saronno (VA), Italia
Tel: [phone]
Fax: [phone]
http://www.nexcom.eu
United Kingdom
NEXCOM EUROPE
10 Vincent Avenue, Crownhill Business Centre,
Milton Keynes, Buckinghamshire MK8 0AB,
United Kingdom
Tel: [phone]
Fax: [phone]
http://www.nexcom.eu
China
NEXCOM China
2F, Block 4, Venus Plaza, Building 21,
ZhongGuanCun Software Park, No. 8,
Dongbeiwang West Road, Haidian District,
Beijing, 100193, China
Tel: [phone]
Fax: [phone]
http://www.nexcom.cn
China-Shanghai Office
Room 1505, Greenland He Chuang Building,
No. 450 Caoyang Rd., Shanghai, 200062, China
Tel: [phone]
Fax: [phone]
http://www.nexcom.cn

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved xi EBC 354 User Manual
Global Service Contact Information
China-Nanjing Office
Hall C, Block 17, Tian Xing Cui Lang Building,
No. 49 Yunnan North Rd.,
Nanjing, 210018, China
Tel: [phone]
Fax: [phone]
http://www.nexcom.cn
China-Wuhan Office
1-C1804/1805, Mingze Liwan,
No. 519 South Luoshi Rd., Hongshan District,
Wuhan, 430070, China
Tel: [phone]
Fax: [phone]
http://www.nexcom.cn
China-Chengdu Office
9F, Shuxiangxie,Xuefu Garden,
No.12 Section 1, South Yihuan Rd.,
Chengdu, 610061,China
Tel: [phone]
Fax: [phone]
http://www.nexcom.cn
China-Shenzhen Office
Western Room 708, Block 210,
Tairan Industry & Trading Place, Futian Area,
Shenzhen, 518040, China
TEL: [phone]
FAX: [phone]
http://www.nexcom.cn
Japan
NEXCOM Japan
9F, Tamachi Hara Bldg.,
4-11-5, Shiba Minato-ku,
Tokyo, 108-0014, Japan
Tel: [phone]
Fax: [phone]
http://www.nexcom-jp.com

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved xii EBC 354 User Manual
Package Contents
Package Contents
Before continuing, verify that the EBC 354 package that you received is
complete. Your package should have all the items listed in the following
table.
EBC 354 Cable Kit(P/N: 10E00035402X0)
Item Part Number Name Description Qty
1 60233ATA73X00 SATA CABLE ACMELUX:19922413 STANDARD L:300mm 1
2 60233DVI18X00 DVI CABLE DVI-I TO DVI-I&D-SUB EDI:2A1292250101-RS DVI Y CABLE DVI-I TO DVI-I L:100mm& D-SUB
L:105mm
1
3 60233PS203X00 EBC563IO PS2 KB/MS CABLE EDI:201061080201-RS PS2 TO JST 8PIN 2.54mm L:200mm+-10mm 1
4 60233PW148X00 SATA POWER CABLE BEST:901-0405-300R HOUSING 4P TO HOUSING 5P L:300mm 1
5 60233SIO62X00 COMFORT CABLE CP:NEX-110819-01 UL2651 #28x9C-DB9+TU1001-10 L:200mm 2
6 60233USB59X00 USB CABLE EDI:262082060204-RS DUAL PORT USB CON TO JST 6PIN 2.0mm L:200+-
10mm
1
EBC 353/354 CPU Cooler(P/N: 10E00035301X0)
Item Part Number Name Description Qty
1 5044440090X00 (H) THERMAL PAD APUS: 3A2015001001500 15x10x1.5mm XR-PE 1
2 5050300435X00 CPU HEATSINK FOR EBC352 SHYUNG SHUHN 58x40x37mm 5800RPM 12V 2510 3PIN L:120mm 1

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved xiii EBC 354 User Manual
Ordering Information
Ordering Information
The following information below provides ordering information for
EBC 354.
EBC354-2550 (P/N: 10E00035403X0) RoHS Compliant
Low power Embedded Board with Intel®Atom™ D2550 processor and
based on Intel®integrated graphics engine w/ VGA/ 24bit LVDS/
6x USB2.0/ 4x COMs/ 2x Mini-PCIe/ 2x Gigabit LAN/ 2x SATA

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 1EBC 354 User Manual
Chapter 1 : Product Introduction
Chapter 1 : Product Introduction
Overview
Key Features
• Onboard Intel®Atom™ processor D2550 1.86GHz CPU
• Intel®NM10 Express chipset
• One 204-pin SO-DIMM socket supports up to 4 GB DDR3 800/1066
MHz SDRAM
• Display: VGA & DVI-D & HDMI & LVDS (1x DF13 20-pin 18/24-bit Single
channel)
• 2x Mini-PCIe
• 2x Intel 82574L PCI Express Gigabit Ethernet
• 2x SATA
• 6x USB, 4-in/4-out GPIO, Mic-in, Line-out, Speaker-out
• Serial port: 3x RS232, 1x RS232/422/485 port
• Support AT/ATX mode and Single +12V DC input

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 2EBC 354 User Manual
Chapter 1 : Product Introduction
Hardware Specications
CPU Support
• Intel®Atom™ processor D2550 1.86GHz CPU
Main Memory
• One 204-pin SO-DIMM socket supports up to 4 GB DDR3 800/1066
MHz SDRAM
Chipset
• Intel®NM10 Express chipset
BIOS
• AMI BIOS
• Plug & Play support
• Advanced Power Management
• Advanced Configuration & Power Interface
• 8M bits SPI ROM
On-board LAN
• 2 x Intel®PCI Express Gigabit Ethernet
• Support Boot From LAN (PXE)
• 2 x RJ45 with LED
Display
• Intel®Atom™ processor D2550 integrated 3D graphics engine, which
enhances Gfx & video, support DX10.1,OpenGL 3.0, and Full HD
Decode (MPEG2,VC1,AVC,H.264), delivers sophisticated graphics for
large display applications, supports dual independent displays support
at graphics base frequency up to 640MHz, and provides a wealth of
options for high-resolution displays.
• Analog VGA interface
- 1 x VGA within DVI-I connector
- Resolution up to 1920x1200 @ 75Hz
• DVI interface
- 1 x DVI-I connector
- Resolution up to 1920x1200
• HDMI interface
- 1 x HDMI connector
- Resolution up to 1920x1200
• LVDS interface
- Single (24bit) LVDS panel, resolution up to 1440 x 900 DF13 20-pin
LVDS connector for internal connection
• CCFL interface
- 1 x CCFL for LCD Panel Backlight Inverter (Analog/ PWM dimming
support)
Audio
• Realtek ALC886 CODEC for High Definition
• 1 x Mic-in and 1 x Line-out pin header

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 3EBC 354 User Manual
Chapter 1 : Product Introduction
Expansion
• 2x Mini-PCIe
I/O Interface
• Serial port: 4 ports
• COM1,3,4 support RS232 with 10-pin box header
• COM2 support RS232/422/485 with 10-pin box header
• USB 2.0: 6 ports
- 4 ports edge connector
- 2 port by 2.0mm JST connector
• 8 GPIO lines via header (GPI 0~3 and GPO 0~3) TTL Level (0/5 V)
• On-board Power LED and HDD Active LED pin header
• 1x 4-pin fan connector (for CPU)
• 1x Keyboard/Mouse pin header
• On-board Buzzer/SMBus2.0/Reset SW/On & Off switch button
Edge I/O Interface
• 1x DVI-I connector
• 1x HDMI connector
• 2x dual stack USB connector
• 2x RJ45 with LED connector
Watchdog Timer
• Watchdog timeout can be programmed by software from 1 second to
255 seconds, and from 1 minute to 255 minutes (Tolerance 15% under
room temperature of 25°C).
Storage
• 2x SATA port
System Monitor
• Monitoring of 4 voltages and 2 temperatures
• 4 Voltages (Vcore, +12V , +3.3V , 5V)
• 2 Temperatures (CPU, System)
• 1 Fan Speed detection
On-board RTC
• On-chip RTC with battery backup
• 1x External Li-Ion battery
Power Input
• Support AT and ATX mode
Power Requirements
• Power requirement: +12V DC Input
• 1x 4-pin power connector
Dimensions
• 3.5” ECX form factor/146mm (L) x 105mm (W) (5.7”x4.1”)
Environment
• Operating temperature: 0°C to 60°C
• Storage temperature: -20°C to 85°C

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 4EBC 354 User Manual
Chapter 1 : Product Introduction
• Relative humidity: Operating 10% to 90% (non-condensing)
Certications
• CE approval
• FCC Class A

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 5EBC 354 User Manual
Chapter 1 : Product Introduction
Knowing Your EBC 354
COM4 COM3 COM2 COM1 SATA1 SATA2
SATA Power K/B Mouse GPIO SIM Card
SIM Card
Battery Connector
CMOS
SMBUS
Mini-PCIe
Reset
Power
AT/ATX Select
Line-out
Mic-in
Speaker out
LED
LAN2LAN1
USB 4/5
USB2USB1HDMIDVI-I
CPU FAN
Intel®Atom™ D2550
(under the fan/ heatsink)
+12V DC Input
LVDS
LVDS Backlight

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 6EBC 354 User Manual
Chapter 2 : Jumpers and Connectors
This chapter describes how to set the jumpers and connectors on the
EBC 354 motherboard.
Before You Begin
• Ensure you have a stable, clean working environment. Dust and dirt can
get into components and cause a malfunction. Use containers to keep
small components separated.
• Adequate lighting and proper tools can prevent you from accidentally
damaging the internal components. Most of the procedures that follow
require only a few simple tools, including the following:
- A Philips screwdriver
- A flat-tipped screwdriver
- A set of jewelers screwdrivers
- A grounding strap
- An anti-static pad
• Using your fingers can disconnect most of the connections. It is
recommended that you do not use needle-nosed pliers to disconnect
connections as these can damage the soft metal or plastic parts of the
connectors.
• Before working on internal components, make sure that the power
is off. Ground yourself before touching any internal components, by
touching a metal object. Static electricity can damage many of the
electronic components. Humid environments tend to have less static
electricity than dry environments. A grounding strap is warranted
whenever danger of static electricity exists.
Precautions
Computer components and electronic circuit boards can be damaged
by discharges of static electricity. Working on computers that are still
connected to a power supply can be extremely dangerous.
Follow the guidelines below to avoid damage to your computer or
yourself:
• Always disconnect the unit from the power outlet whenever you are
working inside the case.
Chapter 2 : Jumpers and Connectors

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 7EBC 354 User Manual
Chapter 2 : Jumpers and Connectors
• If possible, wear a grounded wrist strap when you are working inside the
computer case. Alternatively, discharge any static electricity by touching
the bare metal chassis of the unit case, or the bare metal body of any
other grounded appliance.
• Hold electronic circuit boards by the edges only. Do not touch the
components on the board unless it is necessary to do so. Don’t flex or
stress the circuit board.
• Leave all components inside the static-proof packaging that they shipped
with until they are ready for installation.
• Use correct screws and do not over tighten screws.