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

Contents

Preface 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

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

Preface

This publication, including all photographs, illustrations and software, is

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.

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

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.

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.

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

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.

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.

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: +886-2-8226-7786

Fax: +886-2-8226-7782

http://www.nexcom.com.tw

USA

NEXCOM USA

3758 Spinnaker Court Fremont,

CA, 94538, USA

Tel: +1-510-656-2248

Fax: +1-510-656-2158

http://www.nexcom.com

France

NEXCOM France

La Grande Arche-Paroi Nord

92044 Paris La Défense

France

Tel: +33 (0) 1 40 90 33 35

Fax: +33 (0) 1 40 90 31 01

http://www.nexcom.eu

Germany

NEXCOM GmbH

Leopoldstraße Business Centre,

Leopoldstraße 244, 80807 Munich, Germany

Tel: +49-89-208039-278

Fax: +49-89-208039-279

http://www.nexcom.eu

Italy

NEXCOM ITALIA S.r.l

Via Gaudenzio Ferrari 29,

21047 Saronno (VA), Italia

Tel: +39 02 9628 0333

Fax: +39 02 9619 8846

www.nexcomitalia.it

United Kingdom

NEXCOM EUROPE

10 Vincent Avenue, Crownhill Business Centre,

Milton Keynes, Buckinghamshire MK8 0AB,

United Kingdom

Tel: +44-1908-267121

Fax: +44-1908-262042

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: +86-10-8282-5880

Fax: +86-10-8282-5955

http://www.nexcom.cn

China-Shanghai Office

Room 1505, Greenland He Chuang Building,

No. 450 Caoyang Rd., Shanghai, 200062, China

Tel: +86-21-6150-8008

Fax: +86-21-3251-6358

http://www.nexcom.cn

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: +86-25-8315-3486

Fax: +86-25-8315-3489

http://www.nexcom.cn

China-Wuhan Office

1-C1804/1805, Mingze Liwan,

No. 519 South Luoshi Rd., Hongshan District,

Wuhan, 430070, China

Tel: +86-27-8722-7400

Fax: +86-27-8722-7400

http://www.nexcom.cn

China-Chengdu Office

9F, Shuxiangxie,Xuefu Garden,

No.12 Section 1, South Yihuan Rd.,

Chengdu, 610061,China

Tel: +86-28-8523-0186

Fax: +86-28-8523-0186

http://www.nexcom.cn

China-Shenzhen Office

Western Room 708, Block 210,

Tairan Industry & Trading Place, Futian Area,

Shenzhen, 518040, China

TEL: +86-755-833 7203

FAX: +86-755-833 7213

http://www.nexcom.cn

Japan

NEXCOM Japan

9F, Tamachi Hara Bldg.,

4-11-5, Shiba Minato-ku

Tokyo, 108-0014, Japan

Tel: +81-3-5419-7830

Fax: +81-3-5419-7832

http://www.nexcom-jp.com

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

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

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

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

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

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

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

COM2

LVDS Backlight Panel

COM3

COM4

LVDS

IR Connector

Intel®ICH10R

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

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.

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

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