Acer 2100 User Manual

AcerPower 2100

User’s Guide

Document EDITION PART NUMBER DATE History First Edition May 1998

publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer America Corporation.

Printed in U.S.A

Trademarks Acer and the Acer logo are registered trademarks of Acer Incorporated.

Intel is a registered trademark of Intel Corporation.

Windows, Windows NT, Windows 95, Windows 98, and DOS are registered trademarks of Microsoft Corporation.

Other brand and product names are trademarks or registered trademarks of their respective holders.

Disclaimer Acer and its suppliers make no representations or warranties, either expressed or implied, with respect to the

without obligation to notify any person of such revisions or changes. Acer reserves the right to make changes to the products described in this manual at any time and without notice.

contents hereof and specifically disclaim any warranties of merchantability or fitness for a particular purpose. Further, Acer reserves the right to revise this publication and to make changes from time to time in the contents hereof

AcerPower 2100 User’s Guide

iii

Warranty/Limitation of Liability

Any software described in this manual is licensed "as is" and Acer and its suppliers disclaim any and all warranties, express or implied, including but not limited to any warranty of non-infringement of third party rights, merchantability or fitness for a particular purpose. Acer does not warrant that the operation of the software will be uninterrupted or error free. Should the programs prove defective, the buyer (and not Acer, its distributor, or its dealer) assumes the entire cost of all necessary service, repair, and any incidental or consequential damages resulting from any defect in the software. Please see the Acer Limited Product Warranty for details of Acer’s limited warranty on hardware products. IN NO EVENT SHALL ACER BE LIABLE FOR ANY INDIRECT OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF PROFITS OR DATA, EVEN IF ACER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Software License

Acer grants you a personal, non-transferable, non-exclusive license to use the software that accompanies your computer system only on a single computer. You may not (a) make copies of the software except for making one (1) backup copy of the software which will also be subject to this license, (b) reverse engineer, decompile, disassemble, translate or create derivative works based upon the software, (c) export or re-export the software to any person or destination which is not authorized to receive them under the export control laws and regulations of the United States, (d) remove or alter in any way the copyright notices, or other proprietary legends that were on the software as delivered to you or (e) sublicense or otherwise make the software available to third parties. The software is the property of Acer or Acer’s supplier and you do not have and shall not gain any proprietary interest in the software (including any modifications or copies made by or for you) or any related intellectual property rights. Additional restrictions may apply to certain software titles. Please refer to any software licenses that accompany such software for details.

Join Us to Fight Against Piracy

The Acer Group has been implementing a policy to respect and protect legitimate intellectual property rights. Acer firmly believes that only when each and every one of us abides by such policy, can this industry provide quality service to the general public.

Acer has become a member of the Technology Committee of the Pacific Basin Economic Council which is encouraging the protection and enforcement of legitimate intellectual property rights worldwide. Moreover, in order to ensure quality service to all of our customers, Acer includes an operating system in Acer computer systems which is duly licensed by the legitimate proprietors and produced with quality.

Acer commits itself and urges all of its customers to join the fight against intellectual property piracy wherever it may occur. Acer will pursue the enforcement of intellectual property rights and will strive to fight against piracy.

Acer Year 2000 Compliance Statement

This product, AcerPower 2100, is Year 2000-compliant and carries the "NSTL Hardware Tested Year 2000 Compliant" logo. This product has been tested both by Acer's internal test labs and NSTL using NSTL's YMARK2000 certification test. These tests certify that this product will successfully make the year 2000 transition.

For more details, check the Acer Year 2000 Resource Center at http://www.acer.com/year2000

DMI 2.0 Compliance Statement

This product, AcerPower 2100, has been fully tested and passed the DMI 2.0 conformance requirements.

AcerPower 2100 User’s Guideiv

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions carefully. Save them for future reference.

2. Follow all warnings and instructions marked on the product.

3. Unplug this product from the wall outlet before cleaning. Do not use liquid or aerosol

cleaners. Use a damp cloth for cleaning.

4. Do not use this product near water.

5. Do not place this product on an unstable cart, stand, or table. The product may fall,

causing serious damage to the product.

6. Slots and openings in the cabinet and the back or bottom are provided for ventilation;

to ensure reliable operation of the product and to protect it from overheating, these openings must not be blocked or covered. This product should never be placed near or over a radiator or heat register, or in a built-in installation unless proper ventilation is provided.

7. This product should be operated from the type of power indicated on the marking

label. If you are not sure of the type of power available, consult your dealer or local power company.

8. This product is equipped with a 3-wire grounding-type plug, a plug having a third

(grounding) pin. This plug will only fit into a grounding-type power outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace the outlet. Do not defeat the purpose of the grounding-type plug.

9. Do not allow anything to rest on the power cord. Do not locate this product where

persons will walk on the cord.

10. If an extension cord is used with this product, make sure that the total ampere rating

of the equipment plugged into the extension cord does not exceed the extension cord ampere rating. Also, make sure that the total rating of all products plugged into the wall outlet does not exceed 15 amperes.

11. Never push objects of any kind into this product through cabinet slots as they may

touch dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.

12. Do not attempt to service this product yourself, as opening or removing covers may

expose you to dangerous voltage points or other risks. Refer all servicing to qualified service personnel.

13. Unplug this product from the wall outlet and refer servicing to qualified service

personnel under the following conditions:

a. When the power cord or plug is damaged or frayed

b. If liquid has been spilled into the product

c. If the product has been exposed to rain or water

d. If the product does not operate normally when the operating instructions are

followed. Adjust only those controls that are covered by the operating instructions since improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to normal condition.

e. If the product has been dropped or the cabinet has been damaged

f. If the product exhibits a distinct change in performance, indicating a need for

service

AcerPower 2100 User’s Guide

14. Use only the proper type of power supply cord (provided in your keyboard/manual

accessories box) for this unit. It should be a detachable type: UL listed/CSA certified, type SVT/SJT, rated 6A 125V minimum. Maximum length is 15 feet (4.6 meters).

15. Replace battery with the same type as the product’s battery we recommend. Use of

another battery may present a risk of fire or explosion. Refer battery replacement to a qualified technician.

The battery may explode if not handled properly. Do not recharge, disassemble or dispose of in fire. Keep away from children and dispose of used battery promptly.

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viii

FCC Class B Radio Frequency

Interference Statement

Note:

This equipment has been tested and found 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 in a residential installation. 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. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

4. Consult the dealer or an experienced radio/television technician for help.

Notice 1:

The changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Notice 2:

Shielded interface cables, if any, must be used in order to comply with the emission limits.

AcerPower 2100 User’s Guide

CD-ROM Safety Warning

DANGER

INVISIBLE RADIATION WHEN OPEN.

AVOID EXPOSURE TO BEAM.

Caution on Lithium Batteries

CAUTION

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.

Table of Contents

Introduction

Overview......................................................................................................................2

About This Manual .......................................................................................................3

Chapter 1 Getting Started

1.1 Preinstallation..................................................................................................... 1-1

1.1.1 Selecting a Site............................................................................................. 1-1

1.1.2 Unpacking Components ............................................................................... 1-1

1.2 Features.............................................................................................................. 1-2

1.2.1 Front Panel................................................................................................... 1-2

1.2.2 Rear Panel.................................................................................................... 1-3

1.3 Connecting System Components......................................................................... 1-4

1.3.1 Connecting the Keyboard .............................................................................1-4

1.3.2 Connecting the Monitor ............................................................................... 1-5

1.3.3 Connecting the Mouse .................................................................................. 1-6

1.3.4 Connecting the Printer (Optional) ................................................................ 1-7

1.3.5 Complete System Connections...................................................................... 1-8

1.3.6 Connecting Multimedia Components (Optional)........................................... 1-9

1.3.6 Connecting to the Network......................................................................... 1-10

1.3.7 Connecting the Fax/Modem (Optional) ...................................................... 1-11

1.3.8 Connecting USB Devices (Optional)........................................................... 1-12

1.4 Turning On Your Computer.............................................................................. 1-13

1.5 Turning Off Your Computer ............................................................................. 1-13

1.6 Troubleshooting................................................................................................ 1-14

1.7 Error Messages................................................................................................. 1-16

1.7.1 Software Error Messages............................................................................ 1-16

1.7.2 System Error Messages............................................................................... 1-16

1.7.3 Correcting Error Conditions....................................................................... 1-19

Chapter 2 System Board

2.1 Major Components.............................................................................................. 2-2

2.2 Layout................................................................................................................. 2-4

2.3 Jumpers and Connectors ..................................................................................... 2-5

2.3.1 Jumper and Connector Locations.................................................................. 2-5

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2.3.2 Jumper Settings ............................................................................................2-6

2.3.3 Onboard Connector Functions.......................................................................2-7

2.4 IDE Hard Disk Support .......................................................................................2-8

2.5 Video Function ....................................................................................................2-8

2.6 Audio Function..................................................................................................2-11

2.7 USB ..................................................................................................................2-11

2.8 LAN Function ...................................................................................................2-12

2.9 Hardware Monitoring Function .........................................................................2-12

2.10 Modem Ring-in Function.................................................................................2-12

2.11 Wake-on LAN Function ..................................................................................2-13

Chapter 3 BIOS Utility

3.1 Entering Setup..................................................................................................... 3-2

3.2 System Information .............................................................................................3-4

3.2.1 Processor ......................................................................................................3-4

3.2.2 Processor Speed............................................................................................3-5

3.2.3 Internal Cache ..............................................................................................3-5

3.2.4 External Cache .............................................................................................3-5

3.2.5 Floppy Drive A.............................................................................................3-5

3.2.6 Floppy Drive B .............................................................................................3-5

3.2.7 IDE Primary Channel Master........................................................................3-6

3.2.8 IDE Primary Channel Slave..........................................................................3-6

3.2.9 IDE Secondary Channel Master....................................................................3-6

3.2.10 IDE Secondary Channel Slave .................................................................... 3-6

3.2.11 Total Memory.............................................................................................3-6

3.3 Product Information ............................................................................................ 3-7

3.3.1 Product Name...............................................................................................3-8

3.3.2 System S/N...................................................................................................3-8

3.3.3 Main Board ID.............................................................................................. 3-8

3.3.4 Main Board S/N............................................................................................3-8

3.3.5 System BIOS Version ...................................................................................3-8

3.3.6 DMI BIOS Version....................................................................................... 3-8

3.4 Disk Drives .........................................................................................................3-9

3.4.1 Floppy Drives ...............................................................................................3-9

3.4.2 IDE Drives..................................................................................................3-10

3.5 Onboard Peripherals.......................................................................................... 3-14

3.5.1 Serial Port 1................................................................................................3-14

3.5.2 Parallel Port ................................................................................................3-15

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3.5.3 Onboard Device Settings............................................................................ 3-17

3.6 Power Management .......................................................................................... 3-18

3.6.1 Power Management Mode.......................................................................... 3-19

3.6.2 Power Switch < 4 sec.................................................................................. 3-20

3.6.3 Schedule Resume from Suspend................................................................. 3-20

3.6.4 System Wake-Up Event.............................................................................. 3-21

3.7 Boot Options ..................................................................................................... 3-21

3.7.1 Boot Sequence........................................................................................ 3-22

3.7.2 First Hard Disk Drive............................................................................. 3-22

3.7.3 Primary Display Adapter........................................................................ 3-22

3.7.4 Fast Boot................................................................................................ 3-22

3.7.5 Silent Boot ............................................................................................. 3-22

3.7.6 Num Lock After Boot............................................................................. 3-23

3.7.7 Memory Test.......................................................................................... 3-23

3.7.8 Configuration Table ............................................................................... 3-23

3.7.9 Boot from LanDesk Service Agent.......................................................... 3-23

3.8 Date and Time.................................................................................................. 3-24

3.8.1 Date ........................................................................................................... 3-24

3.8.2 Time .......................................................................................................... 3-24

3.9 System Security................................................................................................. 3-25

3.9.1 Setup Password .......................................................................................... 3-26

3.9.2 Power-on Password .................................................................................... 3-29

3.10 Advanced Options........................................................................................... 3-30

3.10.1 Memory/Cache Options............................................................................ 3-31

3.10.2 PnP/PCI Options ...................................................................................... 3-33

3.11 Load Default Settings...................................................................................... 3-36

3.12 Abort Settings Change.................................................................................... 3-36

3.13 Exiting Setup.................................................................................................. 3-37

Chapter 4 Installing Optional Components

4.1 Installation Precautions ....................................................................................... 4-1

4.1.1 ESD Precautions .......................................................................................... 4-1

4.1.2 Pre-installation Instructions.......................................................................... 4-2

4.1.3 Post-installation Instructions ........................................................................4-3

4.2 Removing and Replacing the Housing Cover....................................................... 4-4

4.2.1 Removing the Housing Cover....................................................................... 4-4

4.2.2 Replacing the Housing Cover .......................................................................4-6

4.3 Disassembling and Reassembling the System...................................................... 4-7

4.4 Replacing the Hard Disk Drive ........................................................................... 4-9

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4.5 Installing and Removing Expansion Boards.......................................................4-11

4.5.1 Installing a PCI Card..................................................................................4-11

4.6 Installing Additional Memory............................................................................4-13

4.6.1 Installing a DIMM ......................................................................................4-14

4.6.2 Removing a DIMM .....................................................................................4-15

4.6.3 Reconfiguring the System ...........................................................................4-15

4.7 Upgrading the CPU...........................................................................................4-15

4.7.1 Removing the Pentium II CPU.................................................................... 4-16

4.7.2 Installing a Pentium II CPU........................................................................ 4-17

4.7.3 Installing the Celeron CPU.........................................................................4-19

List of Figures

Figure 1-1 Front Panel .............................................................................................. 1-2

Figure 1-2 Rear Panel................................................................................................1-3

Figure 1-3 Connecting the Keyboard.........................................................................1-4

Figure 1-4 Connecting the Monitor ..........................................................................1-5

Figure 1-5 Connecting the Mouse.............................................................................1-6

Figure 1-6 Connecting the Parallel Printer ............................................................... 1-7

Figure 1-7 Complete System Connections.................................................................. 1-8

Figure 1-8 Connecting Multimedia Components ...................................................... 1-9

Figure 1-9 Connecting to the Network .....................................................................1-10

Figure 1-10 Connecting the Telephone Line and Handset to the Fax/Modem...........1-11

Figure 1-11 Connecting USB Devices....................................................................1-12

Figure 2-1 System Board Layout................................................................................ 2-4

Figure 2-2 System Board Jumper and Connector Locations .......................................2-5

Figure 4-1 Jumper Setting Label Location.................................................................4-3

Figure 4-2 Removing the Screws...............................................................................4-4

Figure 4-3 Removing the Housing Cover...................................................................4-5

Figure 4-4 Replacing the Housing Cover...................................................................4-6

Figure 4-5 Securing the Screws.................................................................................4-6

Figure 4-6 Detaching the Metal Cover.......................................................................4-7

Figure 4-7 Removing the Drive Frame with CD-ROM, hard disk, and 3.5-inch Diskette

Drives .......................................................................................................................4-8

Figure 4-8 Removing the Hard Disk Drive ................................................................ 4-9

Figure 4-9 Removing a Hard Disk Drive from the Bracket.......................................4-10

Figure 4-10 Attaching a Hard Disk Drive to the Bracket......................................... 4-10

Figure 4-11 Attaching a Hard Disk Drive to the Bracket......................................... 4-11

Figure 4-12 Installing a PCI Card........................................................................... 4-12

Figure 4-13 Installing a DIMM............................................................................... 4-14

Figure 4-14 Removing a DIMM.............................................................................. 4-15

Figure 4-15 Disconnecting the heatsink cable from the system board...................... 4-16

Figure 4-16 Pressing the Latches and Detaching the CPU....................................... 4-17

Figure 4-17 Inserting the Clip Ends into the Processor Holes................................. 4-18

Figure 4-18 Installing the Pentium II CPU ........................................................... 4-18

Figure 4-19 Installing the Pentium II CPU ........................................................... 4-19

Figure 4-20 Installing the Celeron Processor......................................................... 4-20

Figure 4-21 Installing the Retention Module......................................................... 4-21

List of Tables

Table 1-1 System Error Messages ........................................................................... 1-17

Table 1-1 System Error Messages (continued)........................................................ 1-18

Table 2-1 SW1 Settings ............................................................................................2-6

Table 2-2 SW2 Settings ............................................................................................2-6

Table 2-3 Onboard Connectors ................................................................................. 2-7

Table 2-4 IDE Hard Disk Configuration ................................................................... 2-8

Table 2-5 Supported Video Resolutions..................................................................... 2-9

Table 3-1 Parallel Port Operation Mode Settings..................................................... 3-16

Table 4-1 Memory Configurations ......................................................................... 4-13

AcerPower 2100 User’s Guidexiv

Conventions

The following conventions are used in this manual:

, ,

Represents the actual keys that you have to press on the keyboard.

NOTE

Gives bits and pieces of additional information related to the current topic.

WARNING

Alerts you to any danger that might result from doing or not doing specific actions.

CAUTION

Suggests precautionary measures to avoid potential hardware or software problems.

IMPORTANT

Reminds you to take specific action relevant to the accomplishment of the procedure at hand.

TIP

Tells how to accomplish a procedure with fewer steps through little shortcuts.

Introduction

Acer has been on the leading edge of microcomputer systems development for both corporate and home computing needs for 20 years, as the OEM of choice for many of the world’s leading computer companies. Acer is committed to meeting the world’s demand for state-of-the-art computers  at the best prices.

Your AcerPower desktop configuration provides high-speed performance in a small footprint  making it perfect for small offices or general business use.

The system board features the common functions offered by a high-performance board. It has a power-management function that conforms to the power-saving standards of the U.S. Environmental Protection Agency (EPA) Energy Star program. It also supports Plug-and-Play features.

Overview

The AcerPower 2100 system supports Intel Pentium II processors and the Intel Celeron processor. The Celeron processor is Intel's Pentium II cost-down solution. It has two ISA and two PCI slots for future expansion. The system memory is expandable to 256 MB via two onboard 168-pin DIMM (double in-line memory module) sockets.

The system also features a 3-D video function with AGP (Accelerated Graphics Port) support and a 3-D audio function.

Aside from the standard I/O (input/output) interfaces such as one serial port, one parallel port, and PS/2 keyboard and mouse ports, the system also offers two USB (Universal Serial Bus) ports, one VGA (Video Graphics Accelerator) port, one Feature connector, one mono Microphone-in port, one stereo Line-in port, one Line-out port, and one Game/MIDI (Musical Instrument Digital Interface) port. These additional ports are included to enable the system to accommodate additional peripherals.

The system is fully compatible with MS-DOS V6.X, OS/2, SCO UNIX, Windows NT, and Windows 95/98 operating systems.

About This Manual

This manual is divided into four chapters. A brief description of these chapters is provided below.

AcerPower 2100 User’s Guide

Chapter 1 Getting Started

Describes the different parts of the system unit. It tells you how to select a site and set up the basic system. It includes a simple troubleshooting section and a list of system error messages with the corresponding corrective actions.

Chapter 2 System Board

Describes the system board and all its major components. It contains information about the system board layout, jumper settings, jumper and connector locations and functions.

Chapter 3 BIOS Utility

Explains the BIOS and tells how to configure the system by setting BIOS parameters.

Chapter 4 Installing Optional Components

Describes how to remove and replace the system housing, and to install the optional components into the housing. It gives brief instructions accompanied by mechanical illustrations showing how to perform each described procedure.

Introduction

Chapter 1 Getting Started

1.1 Preinstallation

The preinstallation process involves the following activities:

• Selecting a site

• Unpacking components

1.1.1 Selecting a Site

Consider the following when selecting a site for your computer:

• Determine the best site for your system. Cable paths should not run near equipment

that might cause electromagnetic or radio frequency interference such as radio transmitters, television sets, copy machines, or heating and air conditioning equipment.

• Route cables away from personnel and equipment traffic.

• Avoid dusty areas and extremes of temperature and humidity.

1.1.2 Unpacking Components

Unpack the contents of each box carefully. Save all packing materials in case you need to move or ship the system in the future.

Check that all items are present and in good condition. Contact your dealer immediately if anything is missing or damaged.

Chapter 1 - Getting Started 1-1

1.2 Features

The basic configuration consists of a system unit, a monitor, a keyboard, a CD-ROM drive, a diskette drive, a fixed disk drive and a mouse.

1.2.1 Front Panel

Figure 1-1 shows the system unit front panel.

1. 3.5-inch floppy disk drive 4. Power/suspend indicator

2. CD-ROM drive 5. Network active indicator

3. Power button 6. Hard disk/message indicator

Figure 1-1 Front Panel

AcerPower 2100 User’s Guide1-2

1.2.2 Rear Panel

Figure 1-2 shows the system unit rear panel.

1. Game/MIDI port 9. USB Port

2. Microphone-in port 10. Parallel port

3. Line-in port 11. Monitor/VGA Port

4. Line-out port 12. Add-on card brackets

5. Network port 13. Fan

6. PS/2 keyboard port 14. System power socket

7. PS/2 mouse Port 15. Power Switch

8. Serial port

Figure 1-2 Rear Panel

Chapter 1 - Getting Started 1-3

1.3 Connecting System Components

Do not turn on the power until you finish connecting the system components.

The following sections show how to connect each component to the system.

1.3.1 Connecting the Keyboard

Plug the keyboard cable into the keyboard socket on the rear panel. See Figure 1-3.

Figure 1-3 Connecting the Keyboard

AcerPower 2100 User’s Guide1-4

1.3.2 Connecting the Monitor

Plug the monitor signal cable into the VGA connector on the rear panel.

Figure 1-4 Connecting the Monitor

Chapter 1 - Getting Started 1-5

1.3.3 Connecting the Mouse

Plug the mouse cable into the mouse connector on the rear panel.

Figure 1-5 Connecting the Mouse

AcerPower 2100 User’s Guide1-6

1.3.4 Connecting the Printer (Optional)

If you have a parallel printer, connect it to the parallel port on the rear panel. See Figure 1-6.

Figure 1-6 Connecting the Parallel Printer

If you have a serial printer or other serial peripheral, connect it to the serial port (COM1).

Chapter 1 - Getting Started 1-7

1.3.5 Complete System Connections

After connecting all the components, plug one end of the power supply cable into the system power socket. Plug the other end of the power supply cable into a wall outlet. Figure 1-7 shows the complete system connections.

Figure 1-7 Complete System Connections

AcerPower 2100 User’s Guide1-8

1.3.6 Connecting Multimedia Components (Optional)

Your system also supports optional multimedia features. Connect multimedia components as shown in Figure 1-8.

Figure 1-8 Connecting Multimedia Components

Chapter 1 - Getting Started 1-9

1.3.6 Connecting to the Network

You can connect your system to the network via the onboard RJ45 port.

Figure 1-9 Connecting to the Network

AcerPower 2100 User’s Guide1-10

1.3.7 Connecting the Fax/Modem (Optional)

Your system also supports the optional fax/modem feature. Connect the telephone line and handset as shown in Figure 1-10.

Figure 1-10 Connecting the Telephone Line and Handset to the Fax/Modem

Chapter 1 - Getting Started 1-11

1.3.8 Connecting USB Devices (Optional)

The USB ports on the rear panel enable the system to support additional serial devices without using up your system resources. To connect a USB device, simply plug the device cable into a USB port marked on the rear panel. See the following figure:

Figure 1-11 Connecting USB Devices

Most USB devices have a built-in USB port which allows you to daisy-chain other devices.

AcerPower 2100 User’s Guide1-12

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