IBM THINKCENTRE 8086 User manual

ThinkCentre
™
User Guide
Ty pe s 8086, 8087, 8088
Ty pe s 8089, 8090


ThinkCentre
™
User Guide
Ty pe s 8086, 8087, 8088
Ty pe s 8089, 8090


Note
Before using this information and the product it supports, be sure to read the “Important safety information” on page v and
Appendix E, “Notices,” on page 45.
First Edition (June 2004)
© Copyright International Business Machines Corporation 2004. All rights reserved.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Important safety information . . . . . .v
Conditions that require immediate action . . . . .v
General safety guidelines . . . . . . . . . .vi
Service . . . . . . . . . . . . . . .vi
Power cords and power adapters . . . . . .vi
Extension cords and related devices . . . . . vii
Plugs and outlets . . . . . . . . . . . vii
Batteries . . . . . . . . . . . . . . vii
Heat and product ventilation . . . . . . . viii
CD and DVD drive safety . . . . . . . . viii
Additional safety information . . . . . . . .ix
Lithium battery notice . . . . . . . . . . .ix
Modem safety information . . . . . . . . .ix
Laser compliance statement . . . . . . . . .x
Power supply statement . . . . . . . . . .x
Overview . . . . . . . . . . . . . .xi
Information resources . . . . . . . . . . .xi
Chapter 1. Installing options . . . . . .1
Features . . . . . . . . . . . . . . . .1
Specifications . . . . . . . . . . . . . .4
Supported operating positions . . . . . . . .5
Available options . . . . . . . . . . . . .5
Handling static-sensitive devices . . . . . . . .6
Installing external options . . . . . . . . . .7
Locating the connectors on the front of your
computer . . . . . . . . . . . . . .7
Locating the connectors on the rear of your
computer . . . . . . . . . . . . . .8
Obtaining device drivers . . . . . . . . .9
Opening the cover . . . . . . . . . . . .10
Locating components . . . . . . . . . . .11
Identifying parts on the system board . . . . .11
Installing memory . . . . . . . . . . . .12
Installing a PCI adapter . . . . . . . . . .14
Installing internal drives . . . . . . . . . .16
Removing and replacing an optical drive . . .16
Removing and replacing a hard disk drive . . .17
Security features . . . . . . . . . . . . .20
Integrated cable lock . . . . . . . . . .20
Password protection . . . . . . . . . .20
Changing the battery . . . . . . . . . . .21
Erasing a lost or forgotten password (clearing
CMOS) . . . . . . . . . . . . . . . .22
Closing the cover and connecting the cables . . .23
Chapter 2. Using the IBM Setup Utility
program . . . . . . . . . . . . . .25
Starting the IBM Setup Utility program . . . . .25
Viewing and changing settings . . . . . . . .25
Exiting from the IBM Setup Utility program . . .25
Using passwords . . . . . . . . . . . .25
User password . . . . . . . . . . . .26
Administrator password . . . . . . . . .26
Setting, changing, and deleting a password . . .26
Using Security Profile by Device . . . . . . .26
Using IDE Drives Setup . . . . . . . . . .27
Selecting a startup device . . . . . . . . . .27
Selecting a temporary startup device . . . . .27
Changing the startup sequence . . . . . . .27
Appendix A. Updating system
programs . . . . . . . . . . . . .29
System programs . . . . . . . . . . . .29
Updating (flashing) BIOS from a diskette . . .29
Updating (flashing) BIOS from your operating
system . . . . . . . . . . . . . . .29
Recovering from a POST/BIOS update failure . . .30
Appendix B. Cleaning the mouse . . .33
Cleaning an optical mouse . . . . . . . . .33
Cleaning a mouse with a ball . . . . . . . .33
Appendix C. Manual modem
commands . . . . . . . . . . . . .35
Basic AT commands . . . . . . . . . . .35
Extended AT commands . . . . . . . . . .37
MNP/V.42/V.42bis/V.44 commands . . . . . .38
Fax Class 1 commands . . . . . . . . . .39
Fax Class 2 commands . . . . . . . . . .39
Voice commands . . . . . . . . . . . . .40
Appendix D. Customer replaceable unit
(CRU) parts list . . . . . . . . . . .43
Appendix E. Notices . . . . . . . . .45
Television output notice . . . . . . . . . .46
Trademarks . . . . . . . . . . . . . .46
Index . . . . . . . . . . . . . . .47
© Copyright IBM Corp. 2004 iii

iv User Guide

Important safety information
This information can help you safely use your IBM
®
personal computer. Follow
and retain all information included with your IBM computer. The information in
this document does not alter the terms of your purchase agreement or the IBM
Statement of Limited Warranty.
Customer safety is important to IBM. Our products are developed to be safe and
effective. However, personal computers are electronic devices. Power cords, power
adapters, and other features can create potential safety risks that can result in
physical injury or property damage, especially if misused. To reduce these risks,
follow the instructions included with your product, observe all warnings on the
product and in the operating instructions, and review the information included in
this document carefully. By carefully following the information contained in this
document and provided with your product, you can help protect yourself from
hazards and create a safer computer work environment.
Note: This information includes references to power adapters and batteries. In
addition to mobile personal computers, IBM ships some products (such as speakers
or monitors) with external power adapters. If you have such a product, this
information applies to your product. In addition, your computer product may
contain a coin-sized internal battery that provides power to your system clock even
when the machine is unplugged, so the battery safety information applies to all
computers.
Conditions that require immediate action
Products can become damaged due to misuse or neglect. Some product damage
is serious enough that the product should not be used again until it has been
inspected and, if necessary, repaired by an authorized servicer.
As with any electronic device, pay close attention to the product when it is
turned on. On very rare occasions, you might notice an odor or see a puff of
smoke or sparks vent from your machine. Or you might hear sounds like
popping, cracking or hissing. These conditions might merely mean that an
internal electronic component has failed in a safe and controlled manner. Or,
they might indicate a potential safety issue. However, do not take risks or
attempt to diagnose the situation yourself.
Frequently inspect your computer and its components for damage or wear or
signs of danger. If you have any question about the condition of a component,
do not use the product. Contact the IBM Support Center or the product
manufacturer for instructions on how to inspect the product and have it
repaired, if necessary.
In the unlikely event that you notice any of the conditions listed below, or if
you have any safety concerns with your product, stop using the product and
unplug it from the power source and telecommunication lines until you can
speak to the IBM Support Center for further guidance.
v Power cords, plugs, power adapters, extension cords, surge protectors, or power
supplies that are cracked, broken or damaged.
v Signs of overheating, smoke, sparks or fire.
© Copyright IBM Corp. 2004 v

v Damage to a battery (such as cracks, dents, creases), discharge from a battery, or
a buildup of foreign substances on the battery.
v A cracking, hissing or popping sound, or strong odor that comes from the
product.
v Signs that liquid has been spilled or an object has fallen onto the computer
product, the power cord or power adapter.
v The computer product, the power cord or power adapter has been exposed to
water.
v The product has been dropped or damaged in any way.
v The product does not operate normally when you follow the operating
instructions.
Note: If you notice these conditions with a non-IBM product (such as an extension
cord), stop using that product until you can contact the product manufacturer for
further instructions, or until you get a suitable replacement.
General safety guidelines
Always observe the following precautions to reduce the risk of injury and property
damage.
Service
Do not attempt to service a product yourself unless instructed to do so by the IBM
Support Center. Use only an IBM authorized service provider who is approved to
repair your particular product.
Note: Some parts can be upgraded or replaced by the customer. These parts are
referred to as Customer Replaceable Units, or CRUs. IBM expressly identifies CRUs
as such, and provides documentation with instructions when it is appropriate for
customers to replace those parts. You must closely follow all instructions when
performing such replacements. Always make sure that the power is turned off and
that the product is unplugged from any power source before you attempt the
replacement. If you have any questions or concerns, contact the IBM Support
Center.
Power cords and power adapters
Use only the power cords and power adapters supplied by the product
manufacturer.
Never wrap a power cord around the power adapter or other object. Doing so can
stress the cord in ways that can cause the cord to fray, crack or crimp. This can
present a safety hazard.
Always route power cords so that they will not be walked on, tripped over, or
pinched by objects.
Protect the cord and power adapters from liquids. For instance, do not leave your
cord or power adapter near sinks, tubs, toilets, or on floors that are cleaned with
liquid cleansers. Liquids can cause a short circuit, particularly if the cord or power
adapter has been stressed by misuse. Liquids can also cause gradual corrosion of
the power cord terminals and/or the connector terminals on the adapter which can
eventually result in overheating.
vi User Guide

Always connect power cords and signal cables in the correct order and ensure that
all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins and/or
shows signs of overheating (such as deformed plastic) at the ac input or anywhere
on the power adapter.
Do not use any power cords where the electrical contacts on either end show signs
of corrosion or overheating or where the power cord appears to have been
damaged in any way.
Extension cords and related devices
Ensure that extension cords, surge protectors, uninterruptible power supplies, and
power strips that you use are rated to handle the electrical requirements of the
product. Never overload these devices. If power strips are used, the load should
not exceed the power strip input rating. Consult an electrician for more
information if you have questions about power loads, power requirements, and
input ratings.
Plugs and outlets
If a receptacle (power outlet) that you intend to use with your computer
equipment appears to be damaged or corroded, do not use the outlet until it is
replaced by a qualified electrician.
Do not bend or modify the plug. If the plug is damaged, contact the manufacturer
to obtain a replacement.
Some products are equipped with a three-pronged plug. This plug fits only into a
grounded electrical outlet. This is a safety feature. Do not defeat this safety feature
by trying to insert it into a non-grounded outlet. If you cannot insert the plug into
the outlet, contact an electrician for an approved outlet adapter or to replace the
outlet with one that enables this safety feature. Never overload an electrical outlet.
The overall system load should not exceed 80 percent of the branch circuit rating.
Consult an electrician for more information if you have questions about power
loads and branch circuit ratings.
Be sure that the power outlet you are using is properly wired, easily accessible,
and located close to the equipment. Do not fully extend power cords in a way that
will stress the cords.
Connect and disconnect the equipment from the electrical outlet carefully
Batteries
All IBM personal computers contain a non-rechargeable coin cell battery to provide
power to the system clock. In addition many mobile products such as Thinkpad
notebook PCs utilize a rechargeable battery pack to provide system power when in
portable mode. Batteries supplied by IBM for use with your product have been
tested for compatibility and should only be replaced with IBM approved parts.
Never attempt to open or service any battery. Do not crush, puncture, or incinerate
batteries or short circuit the metal contacts. Do not expose the battery to water or
other liquids. Only recharge the battery pack strictly according to instructions
included in the product documentation.
Important safety information vii

Battery abuse or mishandling can cause the battery to overheat, which can cause
gasses or flame to “vent” from the battery pack or coin cell. If your battery is
damaged, or if you notice any discharge from your battery or the buildup of
foreign materials on the battery leads, stop using the battery and obtain a
replacement from the battery manufacturer.
Batteries can degrade when they are left unused for long periods of time. For some
rechargeable batteries (particularly Lithium Ion batteries), leaving a battery unused
in a discharged state could increase the risk of a battery short circuit, which could
shorten the life of the battery and can also pose a safety hazard. Do not let
rechargeable Lithium-Ion batteries completely discharge or store these batteries in a
discharged state.
Heat and product ventilation
Computers generate heat when turned on and when batteries are charging.
Notebook PCs can generate a significant amount of heat due to their compact size.
Always follow these basic precautions:
v Do not leave the base of your computer in contact with your lap or any part of
your body for an extended period when the computer is functioning or when
the battery is charging. Your computer produces some heat during normal
operation. Extended contact with the body could cause discomfort or, potentially,
a skin burn.
v Do not operate your computer or charge the battery near flammable materials or
in explosive environments.
v Ventilation slots, fans and/or heat sinks are provided with the product for safety,
comfort, and reliable operation. These features might inadvertently become
blocked by placing the product on a bed, sofa, carpet, or other flexible surface.
Never block, cover or disable these features.
CD and DVD drive safety
CD and DVD drives spin discs at a high speed. If a CD or DVD is cracked or
otherwise physically damaged, it is possible for the disc to break apart or even
shatter when the CD drive is in use. To protect against possible injury due to this
situation, and to reduce the risk of damage to your machine, do the following:
v Always store CD/DVD discs in their original packaging
v Always store CD/DVD discs out of direct sunlight and away from direct heat
sources
v Remove CD/DVD discs from the computer when not in use
v Do not bend or flex CD/DVD discs, or force them into the computer or their
packaging
v Check CD/DVD discs for cracks before each use. Do not use cracked or
damaged discs
viii User Guide

Additional safety information
DANGER
Electrical current from power, telephone, and communication cables is
hazardous.
To avoid a shock hazard:
v Do not connect or disconnect any cables or perform installation, maintenance,
or reconfiguration of this product during an electrical storm.
v Connect all power cords to a properly wired and grounded electrical outlet.
v Connect to properly wired outlets any equipment that will be attached to this
product.
v When possible, use one hand only to connect or disconnect signal cables.
v Never turn on any equipment when there is evidence of fire, water, or
structural damage.
v Disconnect the attached power cords, telecommunications systems, networks,
and modems before you open the device covers, unless instructed otherwise
in the installation and configuration procedures.
v Connect and disconnect cables as described in the following table when
installing, moving, or opening covers on this product or attached devices.
To connect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlet.
5. Turn device ON.
To disconnect:
1. Turn everything OFF.
2. First, remove power cords from outlet.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
Lithium battery notice
CAUTION:
Danger of explosion if battery is incorrectly replaced.
When replacing the battery, use only IBM Part Number 33F8354 or an equivalent
type battery recommended by the manufacturer. The battery contains lithium and
can explode if not properly used, handled, or disposed of.
Do not:
v Throw or immerse into water
v Heat to more than 100°C (212°F)
v Repair or disassemble
Dispose
of the battery as required by local ordinances or regulations.
Modem safety information
To reduce the risk of fire, electrical shock, or injury when using telephone
equipment, always follow basic safety precautions, such as:
v Never install telephone wiring during a lightning storm.
v Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
Important safety information ix

v Never touch uninsulated telephone wires or terminals unless the telephone line
has been disconnected at the network interface.
v Use caution when installing or modifying telephone lines.
v Avoid using a telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightning.
v Do not use the telephone to report a gas leak in the vicinity of the leak.
Laser compliance statement
Some IBM Personal Computer models are equipped from the factory with a
CD-ROM drive or a DVD-ROM drive. CD-ROM drives and DVD-ROM drives are
also sold separately as options. CD-ROM drives and DVD-ROM drives are laser
products. These drives are certified in the U.S. to conform to the requirements of
the Department of Health and Human Services 21 Code of Federal Regulations
(DHHS 21 CFR) Subchapter J for Class 1 laser products. Elsewhere, these drives
are certified to conform to the requirements of the International Electrotechnical
Commission (IEC) 825 and CENELEC EN 60 825 for Class 1 laser products.
When a CD-ROM drive or a DVD-ROM drive is installed, note the following
handling instructions.
CAUTION:
Use of controls or adjustments or performance of procedures other than those
specified herein might result in hazardous radiation exposure.
Removing the covers of the CD-ROM drive or DVD-ROM drive could result in
exposure to hazardous laser radiation. There are no serviceable parts inside the
CD-ROM drive or DVD-ROM drive. Do not remove the drive covers.
Some CD-ROM drives and DVD-ROM drives contain an embedded Class 3A or
Class 3B laser diode. Note the following statement.
DANGER
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
Power supply statement
Never remove the cover on a power supply or any part that has the following
label attached.
Hazardous voltage, current, and energy levels are present inside any component
that has this label attached. There are no serviceable parts inside these components.
If you suspect a problem with one of these parts, contact a service technician.
x User Guide

Overview
Thank you for selecting an IBM
®
computer. Your computer incorporates many of
the latest advances in computer technology and can be upgraded as your needs
change.
This publication supports several computer models. Information in this section will
help you identify your computer and help you find the chapter that contains
information specific to your computer.
Adding hardware options to your computer is an easy way to increase its
capabilities. Instructions for installing external and internal options are included in
this publication. When adding an option, use these instructions along with the
instructions that come along with the option.
Information resources
The Quick Reference that comes with your computer provides information for
installing your computer and starting the operating system. It also includes basic
troubleshooting information, software recovery procedures, help and service
information, and warranty information.
Access IBM, on your desktop, provides a link to more information about your
computer.
If you have Internet access, the most up-to-date manuals for your computer are
available from the World Wide Web. To access this information, point your browser
to
http://www.ibm.com/pc/support
Type your machine type and model number in the Quick path field, and click Go.
© Copyright IBM Corp. 2004 xi

xii User Guide

Chapter 1. Installing options
This chapter provides an introduction to the features and options that are available
for your computer. You can expand the capabilities of your computer by adding
memory or adapters. When installing an option, use these instructions along with
the instructions that come with the option.
Important
Before you install or remove any option, read “Important safety information”
on page v. These precautions and guidelines will help you work safely.
Features
This section provides an overview of the computer features and preinstalled
software.
System information
The following information covers a variety of models. For information for
your specific model, use the IBM Setup Utility. See Chapter 2, “Using the IBM
Setup Utility program,” on page 25.
Microprocessor (varies by model type)
v Intel
®
Pentium
®
4 processor with HyperThreading Technology
v Intel Pentium 4 processor
v Intel Celeron
®
processor
v Internal cache (size varies by model type)
Memory
v Support for two double data rate (DDR) dual inline memory modules (DIMMs)
v 512 KB flash memory for system programs
Internal
drives
v Internal hard disk drive
v Optical drive (some models)
© Copyright IBM Corp. 2004 1

Video subsystem
An integrated graphics controller for a Video Graphics Array (VGA) monitor
Audio subsystem
v AC’97 with ADI 1981B Audio Codec
v Line in and line out connectors on the rear panel
v Microphone and headphone connectors on the front panel
v Mono internal speaker (some models)
Connectivity
v 10/100 Mbps integrated Intel Ethernet controller that supports the Wake on
LAN
®
feature (some models)
v 10/100/1000 Mbps integrated Intel Ethernet controller that supports the Wake
on LAN feature (some models)
v Soft modem V.90/V.44 (some models)
System management features
v Remote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP)
v Wake on LAN
v Wake on Ring (in the IBM Setup Utility program, this feature is called Serial Port
Ring Detect for an external modem)
v Remote Administration
v Automatic power-on startup
v System Management (SM) BIOS and SM software
v Ability to store POST hardware test results
Input/output
features
v 25-pin, Extended Capabilities Port (ECP)/Extended Parallel Port (EPP)
v 9-pin serial connector
v Six 4-pin, USB connectors (two on front panel and four on rear panel)
v PS/2
®
mouse connector
v PS/2 keyboard connector
v Ethernet connector
v VGA monitor connector
v Four audio connectors (headphone and microphone on front panel and line in
and line out on rear panel)
Expansion
v Two drive bays
v One 32-bit peripheral component interconnect (PCI) adapter connector
Power
v 200 W power supply with automatic voltage selection switch
v Automatic 50/60 Hz input frequency switching
v Advanced Power Management support
v Advanced Configuration and Power Interface (ACPI) support
Security
features
v User and administrator passwords
2 User Guide

v Support for the addition of an integrated cable lock (Kensington lock)
v Startup sequence control
v Startup without diskette drive, keyboard, or mouse
v Unattended start mode
v Hard disk I/O control
v Serial and parallel port I/O control
v Security profile by device
IBM
preinstalled software
Your computer might come with preinstalled software. If it does, an operating
system, device drivers to support built-in features, and other support programs are
included.
Operating systems (preinstalled) (varies by model type)
Note: Not all countries or regions will have these operating systems.
v Microsoft
®
Windows
®
XP Home Edition
v Microsoft Windows XP Professional
Operating
systems (certified or tested for compatibility)
1
v Microsoft Windows 2000
v Linux
1. The operating systems listed here are being certified or tested for compatibility at the time this publication goes to press.
Additional operating systems might be identified by IBM as compatible with your computer following the publication of this
booklet. Corrections and additions to this list are subject to change. To determine if an operating system has been certified or
tested for compatibility, check the Web site of the operating system vendor.
Chapter 1. Installing options 3

Specifications
This section lists the physical specifications for your computer.
Dimensions
Height: 89 mm (3.5 in.)
Width: 276 mm (10.9 in.)
Depth: 273 mm (10.7 in)
Weight
Minimum configuration as shipped: 6.0 kg (13.2 lb)
Maximum configuration: 6.4 kg (14.0 lb)
Environment
Air temperature:
Operating at 0 - 3000 ft (914.4 m): 10° to 35°C
(50° to 95°F)
Operating at 3000 ft - 7000 ft (2134 m): 10° to
32°C (50° to 89.6°F)
Non-operating: 10° to 43°C (50° to 110°F)
Humidity:
Operating: 8% to 80%
Non-operating: 8% to 80%
Transit: 8% to 90%
Maximum altitude: 2134 m (7000 ft)
Electrical
input
Input voltage:
Low range:
Minimum: 100 V ac
Maximum: 127 V ac
Input frequency range: 50–60 Hz
High range:
Minimum: 200 V ac
Maximum: 240 V ac
Input frequency range: 50–60 Hz
Input kilovolt-amperes (kVA) (approximate):
Minimum configuration as shipped: 0.09 kVA
Maximum configuration: 0.23 kVA
Heat output (approximate) in British thermal units (Btu)
per hour:
Minimum configuration: 256 Btu/hr (75 watts)
Maximum configuration: 682 Btu/hr (200 watts)
Airflow
Approximately 14 cubic feet (0.45 cubic meters) per
minute
Acoustical
noise-emission values
Average sound-pressure levels:
At operator position:
Idle: 29 dBA
Operating: 34 dBA
At bystander position - 1 meter (3.3 ft):
Idle: 28 dBA
Operating: 30 dBA
Declared (upper limit) sound-power levels:
Idle: 4.0 bels
Operating: 4.3 bels
Note: These levels were measured in controlled
acoustical environments according to the procedures
specified by the American National Standards Institute
(ANSI) S12.10 and ISO 7779 and are reported in
accordance with ISO 9296. Actual sound-pressure levels
in a given location might exceed the average values
stated because of room reflections and other nearby
noise sources. The declared sound-power levels indicate
an upper limit, below which a large number of
computers will operate.
4 User Guide

Supported operating positions
To provide proper air flow to internal components, you must position your
computer in one of the positions as illustrated below.
Available options
The following are some available options:
v External options
– Parallel port devices, such as printers and external drives
– Serial port devices, such as external modems and digital cameras
– Audio devices, such as external speakers for the sound system
– USB devices, such as printers, joysticks, and scanners
– Security device, such as an integrated cable lock
– Monitors
v
Internal options
– System memory, called dual inline memory modules (DIMMs)
– Peripheral component interconnect (PCI) adapters
– Internal drives, such as:
- Optical drives, such as CD drives and DVD drives (some models)
- Hard disk drive
For
the latest information about available options, see the following World Wide
Web pages:
v http://www.ibm.com/pc/us/options/
v http://www.ibm.com/pc/support/
You
can also obtain information by calling the following telephone numbers:
v Within the United States, call 1-800-IBM-2YOU (1-800-426-2968), your IBM
reseller, or IBM marketing representative.
v Within Canada, call 1-800-565-3344 or 1-800-IBM-4YOU.
Chapter 1. Installing options 5

v Outside the United States and Canada, contact your IBM reseller or IBM
marketing representative.
Handling static-sensitive devices
Static electricity, although harmless to you, can seriously damage computer
components and options.
When you add an option, do not open the static-protective package containing the
option until you are instructed to do so.
When you handle options and other computer components, take these precautions
to avoid static electricity damage:
v Limit your movement. Movement can cause static electricity to build up around
you.
v Always handle components carefully. Handle adapters and memory modules by
the edges. Never touch any exposed circuitry.
v Prevent others from touching components.
v When you install a new option, touch the static-protective package containing
the option to a metal expansion-slot cover or other unpainted metal surface on
the computer for at least two seconds. This reduces static electricity in the
package and your body.
v When possible, remove the option and install it directly in the computer without
setting the option down. When this is not possible, place the static-protective
package that the option came in on a smooth, level surface and place the option
on it.
v Do not place the option on the computer cover or other metal surface.
6 User Guide