Nexcom NEX 605 User manual

NEXCOM International Co., Ltd.
Published July 2012 www.nexcom.com
NEXCOM International Co., Ltd.
Industrial Computing Solutions
Embedded Computing (Industrial Motherboard)
NEX 605
User Manual

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved ii NEX 605 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......................................................x
Conventions Used in this Manual......................................................x
Global Service Contact Information .................................................xi
Package Contents.......................................................................... xiv
Ordering Information...................................................................... xv
Chapter 1: Product Introduction 1
Overview......................................................................................... 1
Key Features.................................................................................... 1
Hardware Specifications .................................................................. 2
Knowing Your NEX 605................................................................... 5
Chapter 2: Jumpers and Connectors................................................ 6
Before You Begin............................................................................. 6
Precautions...................................................................................... 6
Jumper Settings............................................................................... 7
Locations of the Jumpers and Connectors........................................ 8
Jumpers........................................................................................... 9
CMOS Clear Select ................................................................ 9
Power Mode Select................................................................ 9
LVDS Backlight Power Select ................................................ 10
Connector Pin Definitions.............................................................. 11
External I/O Interfaces .......................................................... 11
PS/2 Mouse and Keyboard Ports................................ 11
COM1 and VGA Ports............................................... 11
HDMI........................................................................ 12
Dual eSata Ports........................................................ 12
LAN1 and USB0/1 Ports............................................. 13
LAN2 and USB2/3 Ports............................................. 13
Audio Connectors..................................................... 14
Internal Connectors ............................................................. 15
SATA and LAN LED Connectors ................................. 15
FP Control Connector................................................ 15
SMBus Connector ..................................................... 16
Line-in Connector ..................................................... 16
SGPIO (SFF-8485) connector...................................... 17
USB6/7 Connector .................................................... 17

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved iii NEX 605 User Manual
Contents
USB8/9 Connector .................................................... 18
LVDS Backlight Connector......................................... 18
COM2 Connector (RS232)......................................... 19
COM3 Connector (RS232)......................................... 19
COM4 Connector (RS232)......................................... 20
IR Connector............................................................. 20
FAN Connectors........................................................ 21
RTC Battery IN Connector ......................................... 21
ATX Power Connector............................................... 22
SATA 2.0 Connectors ................................................ 22
LVDS Connector........................................................ 23
Sim Card Holder........................................................ 23
PIO Connector .......................................................... 24
Mini-PCIe Slot (3.5G)................................................. 24
PCIe x4 ..................................................................... 26
Block Diagram............................................................................... 27
Board Dimensions.......................................................................... 28
Chapter 3: BIOS Setup 29
About BIOS Setup.......................................................................... 29
When to Configure the BIOS ......................................................... 29
Default Configuration.................................................................... 30
Entering Setup............................................................................... 30
Legends......................................................................................... 30
BIOS Setup Utility .......................................................................... 32
Main.................................................................................... 32
Advanced ............................................................................ 33
Chipset................................................................................ 41
Boot .................................................................................... 43
Security ............................................................................... 44
Save & Exit........................................................................... 44
Appendix A: Watchdog Timer 46
WDT Programming Guide.............................................................. 46

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved iv NEX 605 User Manual
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
NEX 605 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
systems to remain CE compliant, only CE-compliant parts may be used.
Maintaining CE compliance also requires proper cable and cabling
Preface

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved vNEX 605 User Manual
Preface
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
Warranty and RMA
NEX 605 User Manual
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 encoun-
tered 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 acces-
sories (manuals, cable, etc.) and any components from the card,
such as CPU and RAM. If the components were suspected as part of
the problems, 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 cus-
tomers’ 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 cus-
tomer 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
Warranty and RMA
NEX 605 User Manual
• 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 incon¬sistent 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
de-scribed 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
Warranty and RMA
NEX 605 User Manual
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 this equipment from any AC outlet before cleaning. Use a
damp cloth. Do not use liquid or spray detergents for cleaning.
4. For plug-in equipment, the power outlet socket must be located near
the equipment and must be easily accessible.
5. Keep this equipment away from humidity.
6. Put this equipment on a stable surface during installation. Dropping it or
letting it fall may cause damage.
7. The openings on the enclosure are for air convection to protect the
equipment from overheating. DO NOT COVER THE OPENINGS.
8. Make sure the voltage of the power source is correct before connecting
the equipment to the power outlet.
9. Place the power cord in a way so that people will not step on it. Do not
place anything on top of the power cord. Use a power cord that has
been approved for use with the product and that it matches the voltage
and current marked on the product’s electrical range label. The voltage
and current rating of the cord must be greater than the voltage and
current rating marked on the product.
10. All cautions and warnings on the equipment should be noted.
11. If the equipment is not used for a long time, disconnect it from the
power source to avoid damage by transient overvoltage.
12. Never pour any liquid into an opening. This may cause fire or electrical
shock.
13. Never open the equipment. For safety reasons, the equipment should
be opened only by qualified service personnel.
14. If one of the following situations arises, get the equipment checked by
service personnel:
a. The power cord or plug is damaged.
b. Liquid has penetrated into the equipment.
c. The equipment has been exposed to moisture.
d. The equipment does not work well, or you cannot get it to work
according to the user’s manual.

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved ix
Warranty and RMA
NEX 605 User Manual
e. The equipment has been dropped and damaged.
f. The equipment has obvious signs of breakage.
15. Do not place heavy objects on the equipment.
16. The unit uses a three-wire ground cable which is equipped with a third
pin to ground the unit and prevent electric shock. Do not defeat the
purpose of this pin. If your outlet does not support this kind of plug,
contact your electrician to replace your obsolete outlet.
17. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY
REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT
TYPE RECOMMENDED BY THE MANUFACTURER. DISCARD USED
BATTER¬IES ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS.
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
- 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 prod-
ucts 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 x
Global Service Contact Information
NEX 605 User Manual
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
La Grande Arche-Paroi Nord
92044 Paris La Défense
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]
www.nexcomitalia.it
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
Global Service Contact Information
NEX 605 User Manual
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
Package Contents
NEX 605 User Manual
Package Contents
Item P/N Name Qty
1 5044440079X00 GASKET FOR VIA CPU KGS:C-4505(20X20x1)+G4000 1
2 5044440090X00 (H)THERMAL PAD APUS:3A2015001001500 1
3 5050300517X00 CPU HEATSINK FOR NEX605 SHYUNG SHUHN 1

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved xiii
Ordering Information
NEX 605 User Manual
Ordering Information
The following information below provides ordering information for NEX 605.
NEX 605-2550 (P/N: 10G00060500X0) RoHS Compliant
Mini ITX, Intel®Atom™ D2550 processor and based on Intel®integrated
graphics engine w/ VGA/18-bit LVDS/HDMI /8x USB2.0/4x COMs/
1x Mini-PCIe/2x Gigabit LAN/2x ESATA/6x SATA /1x LPT /1x PCIE by Four

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 1
Chapter 1: Product Introduction
NEX 605 User Manual
Chapter 1: Product Introduction
Overview
Key Features
• Main Features
• Onboard Intel®Atom™ processor D2550 1.86GHz CPU
• Intel®ICH10R to support Intel®Matrix Storage RAID 0/ 1/ 5/ 10
• Dual 204-pins DDR3 SO-DIMMs support max. 4GB SDRAM memory
• Support VGA/ HDMI, VGA/ LVDS or HDMI/ LVDS dual displays
• 8x USB, 4x COM, 2x GbE(Intel), 2x eSATA/ 6x SATA, 8x GPIO, 1x LPT
• Audio Mic-in/ Line-out, (internal Line-in)
• 1x Mini-PCIe (1x full-size/ SIM tray), 1x PCIe x4
• Standard ATX v.2.0 input by AT/ ATX power mode

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 2
Chapter 1: Product Introduction
NEX 605 User Manual
Hardware Specications
CPU Support
• Intel®Atom™ processor D2550 1.86GHz CPU
Main Memory
• Dual 204-pin SO-DIMM socket supports up to 4 GB DDR3 800/1066
MHz SDRAM
Chipset
• Intel®ICH10R support Intel®Matrix Storage technology of RAID 0/ 1/ 5/
10 configuration
BIOS
• AMI BIOS
• Plug & Play support
• Advanced Power Management
• Advanced Configuration & Power Interface
• 8M bits SPI ROM
On-board LAN
• 2x Intel 82574L PCI Express Gigabit Ethernet
• Support Boot From LAN (PXE)
• 2x RJ45 with LEDs build-in 2x dual stackable USB type A connectors on
edge I/O
Display
• Intel®Atom™ processor D2550 integrated 3D graphics engine, which
enhances Gfx & Video, support DX10.1, OpenGL 3.0, Full HD-Decode
(MPEG2,VC1,AVC,H.264), delivers sophisticated graphics for large
display applications, supports dual independent at graphics base
frequency up to 640MHz, and provides a wealth of options for high-
resolution displays.
• Analog VGA interface
• Resolution up to 1920x1200 75Hz
• HDMI interface
• 1x HDMI Interface
• 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
• 1x CCFL for LCD Panel Backlight Inverter
Audio
• Realtek ALC886 CODEC for High Definition
• 1x Mic-in/ 1x speaker-out by audio jack on edge I/O and 1x line-in by pin
header.
Expansion
• 1x Mini-PCIe (1x full-size/ SIM tray)
• 1x PCIE X4 slot

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 3
Chapter 1: Product Introduction
NEX 605 User Manual
I/O Interface
• Serial port: 4 ports
• COM1, RS232 by DB-9 male on edge I/O
• COM2, 3, 4 support 3x RS232 ports by 2x 5-pins box header and dual-
JST 10pins wafer
• 8x USB 2.0: used 9 of 14 ports (ICH10R)
• 4x ports by 2x dual stack USB2.0 on edge I/O (port 0~ 3)
• 4x ports by 2x 5-pins header pitch 2.54mm (port 6~ 9)
• 1x ports to mini-PCIe slots (port 10)
• Power LED and HDD Active LED/ Reset/ Power On-Off by 2x 5-pins
header
• 2x 4-pins fan connector (for CPU and system)
• On board Buzzer and SMBus 2.0 by 1x 4-pins, IrDA by 1x 5-pins header
• 2x 13-pins box header for legacy parallel port/ LPT
• 2x 13-pins header for 6SATA/ 2GbE LEDs connector
Edge I/O Interface
• 1x dual stack PS2 for Keyboard/ Mouse
• 1x dual stack DB9 male for COM1 + DB15 female VGA
• 1x HDMI connector
• 1x dual stack eSATA (port 1 is default by eSATA)
• 2x RJ45 LAN + dual stack USB connectors
• 1x Mic-in/ 1x Speaker-out Jack
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 25°C).
• Storage
• Default by 2x eSATA by external edge I/O and internal 4x SATA
connectors support RAID
• Optional by DIP-SW1 setting to 1x eSATA (on bottom edge I/O) and
internal 5x SATA
• 2x 13-pins header for 6x SATA/ 2x LAN LEDs connector
System Monitor
• Monitoring of 4 voltages and 2 temperatures
• 4 Voltage (Vcore, +12V , +3.3V , 5V)
• 2 Temperatures (CPU, System)
• 2 Fans 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: ATX Input, jumper AT/ ATX (default) mode
• Onboard 2x 12-pins standard ATX version 2.0 power connector

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 4
Chapter 1: Product Introduction
NEX 605 User Manual
Dimensions
• Mini-ITX form factor/170mm (L) x 170mm (W) (6.7”x6.7”)
Environment
• Operating temperatures: 0°C to 60°C
• Storage temperature: -20°C to 85°C
• Relative humidity: Operating 10% to 90%, non-condensing
Certifications
• CE approval
• FCC Class A

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 5
Chapter 1: Product Introduction
NEX 605 User Manual
Knowing Your NEX 605
SIM Card Connector
Audio Connectors
LAN2/ USB LAN1/ USB
LAN1/ USB
eSATA
USB 8/9
HDMI LVDS Backlight
Panel Power Select
COM & VGA
PS/2 KB/ MS
PS/2 KB/ MS
COM2
LVDS Backlight Panel
COM3
COM4
LVDS
IR Connector
Intel®ICH10R
FAN Connector
FAN Connector
USB6/7 DIMM1 DIMM2
Line-in
SATA1
PCIe x4
SATA2
SATA3
CMOS
SATA4
SM BUS
SATA5
RTC Battery
FP Control
ATX/AT Select
Mini-PCIe
SATA & LAN LED
ATX Power Connector

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 6
Chapter 2: Jumpers and Connectors
NEX 605 User Manual
Chapter 2: Jumpers and Connectors
This chapter describes how to set the jumpers and connectors on the
NEX 605 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.
• 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.

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 7
Chapter 2: Jumpers and Connectors
NEX 605 User Manual
Jumper Settings
A jumper is the simplest kind of electric switch. It consists of two metal
pins and a cap. When setting the jumpers, ensure that the jumper caps are
placed on the correct pins. When the jumper cap is placed on both pins,
the jumper is short. If you remove the jumper cap, or place the jumper cap
on just one pin, the jumper is open.
Refer to the illustrations below for examples of what the 2-pin and 3-pin
jumpers look like when they are short (on) and open (off).
Two-Pin Jumpers: Open (Left) and Short (Right) Three-Pin Jumpers: Pins 1 and 2 Are Short