Zoom ZoomAir 4000 User manual

ZoomAirZoomAir™
Wireless LANWireless LAN
Owner’sOwner’s
ManualManual
Client installation:
ZoomAir PC Card
ZoomAir ISA Card

NOTICE
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All brand and product names are the trademarks of their respective owners.
© Copyright 1999
All rights reserved.

Contents
INTRODUCTION ................................................................................ 5
WHAT IS A LAN?..............................................................................................5
WHY WIRELESS?...............................................................................................6
HOW DOES THE ZOOMAIR WORK?.............................................................7
WHAT ABOUT SECURITY?...............................................................................7
IS INTERFERENCE A PROBLEM?....................................................................8
HOW DO I CONNECT TO MY WIRED LAN? ..............................................8
WHAT DO I NEED TO INSTALL A WIRELESS LAN?..................................9
INSTALLATION PREVIEW..............................................................................11
1 PLANNING YOUR WIRELESS NETWORK.........................................13
SIMPLE AD-HOC NETWORK ........................................................................13
INFRASTRUCTURE ALL-WIRELESS NETWORK ..........................................13
INFRASTRUCTURE NETWORK WITH ACCESS POINT TO A WIRED LAN14
Strategy..........................................................................................................14
All Clients First...................................................................................14
Access Point(s) First ...........................................................................15
SITE SURVEY ...................................................................................................15
2A INSTALLING THE ZOOMAIR PC CARD UNDER WINDOWS 95
AND 98..............................................................................................17
INSERTING THE ZOOMAIR CARD...............................................................17
INSTALLING THE DRIVERS...........................................................................18
RUNNING THE ZOOMAIR SETUP PROGRAM.............................................18
REMOVING THE ZOOMAIR CARD...............................................................20
INTERPRETING THE LEDS...........................................................................20
NEXT STEPS.....................................................................................................21
2B INSTALLING THE ZOOMAIR PC CARD UNDER WINDOWS
NT 4.0..............................................................................................22
INSERTING THE ZOOMAIR CARD...............................................................22
INSTALLING THE DRIVERS...........................................................................23
Installing with No Existing Network............................................................23
Installing the PC Card Drivers............................................................24
Setting Up the Network.......................................................................24
Installing on an Existing Network.................................................................27
RUNNING THE ZOOMAIR SETUP PROGRAM.............................................29
REMOVING THE ZOOMAIR CARD...............................................................31
INTERPRETING THE LEDS...........................................................................31
NEXT STEPS.....................................................................................................32

3 SHARING PRINTERS AND FILES.....................................................33
PRINTER SHARING.........................................................................................33
FILES.................................................................................................................35
FULL-TIME VS. PART-TIME ..........................................................................36
ADDITIONAL INFORMATION .......................................................................37
4 CHANGING SECURITY SETTINGS...................................................38
CHANGING THE SSID...................................................................................38
WIRED EQUIVALENT PRIVACY (WEP)......................................................41
Access Control................................................................................................41
Eavesdropping Prevention...............................................................................41
Implementing WEP.......................................................................................41
5 ADVANCED SETTINGS....................................................................44
RUNNING THE CONFIGURATION UTILITY................................................44
6 SOLVING COMMON PROBLEMS......................................................50
APPENDIX A INSTALLING THE ISA ADAPTER BOARD ON A DESKTOP
COMPUTER.......................................................................................54
HARDWARE INSTALLATION .........................................................................54
SOFTWARE INSTALLATION...........................................................................56
Windows 95 or 98...............................................................................56
Windows NT 4.0.................................................................................57
APPENDIX B UNINSTALLING ZOOMAIR..........................................60
RECORDING CURRENT NETWORK SETTINGS..........................................60
UNINSTALLING ZOOMAIR DRIVERS..........................................................61
REINSTALLING NETWORK SETTINGS ........................................................61
APPENDIX C REGULATORY INFORMATION.....................................62
FCC PART 15 EMISSIONS STATEMENT......................................................62
FCC WARNING...............................................................................................63
FCC PART 15 C STATEMENT.......................................................................63
CANADIAN EMISSIONS STATEMENT...........................................................63
INDUSTRY CANADA STATEMENTS..............................................................63
IMPORTANT INFORMATION .............................................................64

Introduction 5
Introduction
The ZoomAir™ Wireless LAN Cards allow you to connect two or
more Windows® computers without wires! A ZoomAir Card on
each computer is all you need for sharing printers and files.
If you have also purchased the ZoomAir Access Point Software
or the ZoomAir AP128™ hardware access point with your
ZoomAir Wireless LAN Cards, you get greater security and access
control and easy connection to an existing wired LAN. This solu-
tion serves as a bridge between the wired and wireless portions of
the LAN.
This Manual provides a brief overview of wireless LANs and tells
you how to install the ZoomAir Wireless LAN hardware on your
computers.
What Is a LAN?
A LAN is a Local Area Network. It is a network of computers that
are connected with each other. Only the computers connected to
the network can take part in it.
LANs have been around for some time. They are used extensively
in many companies. Each computer requires a Network Interface
Card, or NIC. The connecting cables are usually pulled through the
walls, ceilings, or floors of the building.
Wireless connections between computers have also been around
for some time. Instead of a NIC, each computer is fitted with a
transceiver (combination transmitter and receiver) that sends data
as radio or infrared signals.
Until now, wireless LAN products have often been too expensive
for use in a home or small-to-medium office. Moreover, most
wireless systems were proprietary: You were limited to a single

6ZoomAir Wireless LAN Owner’s Manual
vendor. The ZoomAir Wireless LAN Card adheres to the IEEE
802.11 DSSS specification to ensure interoperability with other
802.11 DSSS wireless LAN systems.
Why Wireless?
With a wireless LAN product like ZoomAir,you no longer have to
choose between the inconvenience and expense of running wires
and the expense of older, nonstandard wireless devices. Also, if
users in your home or office have laptop computers, a wireless
LAN preserves the mobility that laptops are supposed to provide.
Wireless technology offers a level of flexibility unobtainable with
wired LANs. Computers can be added to the system without addi-
tional wiring. Computers can be moved from room to room with-
out changing the wiring. Laptop users can move through an office
and be instantly connected to the company LAN (wired or wire-
less) without looking for a network jack.
A wireless LAN may connect all computers to each other, or it
may be set up to use one of the computers as a “hub” for better
control of the network.
The first arrangement is called an ad-hoc, or peer-to-peer, net-
work. It is ideal for home use and for small offices. In this Manual,
such an arrangement will be called an ad-hoc network.
The second arrangement is called an infrastructure, or access
point, network. All computers on the network communicate
through an Access Point. The ZoomAir Access Point should be
installed on the computer that is connected to the wired LAN.
The ZoomAir Access Point Software is ideal for integrating a
wireless LAN with an existing wired LAN. With one or more Ac-
cess Points on a wired LAN, mobile units (typically laptop com-
puters) can “roam” throughout the LAN and remain connected to
it.
The Access Point Software can also be used to create an infra-
structure wireless-only LAN for better access control and security
and to extend the range of the LAN.

Introduction 7
How Does the ZoomAir Work?
The radio transmitter in the ZoomAir Card sends a radio signal in
the 2.4 GHz (gigahertz, or billion-cycles-per-second) part of the
radio spectrum. This is one of the “ISM” bands that are reserved
for general use and require no license to use. (For instance, most
cordless phones also operate in a different ISM band.) When a
computer adds data to this radio signal, it modifies, or “modulates”
the signal, changing the pattern of its frequencies. The receiver of
the radio signal extracts the data from the signal and sends it to the
receiving computer.
The ZoomAir uses Direct Sequence Spread Spectrum (DSSS)
technology to conserve power, reject interference from other radio
signals, and provide data security. With DSSS, each bit of data is
spread out over a fairly wide frequency band containing a pattern
of frequencies that is detected at the receiving end and converted
back into data. The frequency pattern changes constantly, with the
patterns being coordinated at the sending and receiving ends. To a
receiver that is not 802.11 DSSS capable, the signal looks like low-
level noise.
What About Security?
Because each member of your network must be identified with the
name of your network (called a Service Set Identifier, or SSID),
outsiders cannot access your network without knowing the name.
With WEP (Wired Equivalent Privacy, a software utility included
with all ZoomAir products) enabled, your network is even more
secure—as secure as a wired network.Wireless LANs with a soft-
ware or hardware Access Point can actually be more secure than
wired LANs (with additional layers of security, including encryp-
tion, using commercially available software).
Keep in mind also that the ZoomAir products are fairly low-
powered, with a typical range up to 300 feet (about 90 meters).
Under most circumstances, potential eavesdroppers will not even
be aware of your network.

8ZoomAir Wireless LAN Owner’s Manual
Is Interference a Problem?
Interference from neighboring wireless LANs should not be a
problem. Your own network operates on a frequency “channel”
much like a cellular phone. If a close neighbor also has a wireless
LAN, there will be interference only if you operate on the same or
an adjacent channel and the range of the wireless devices overlaps.
(Interference is experienced as a slowing of network response;
neighboring LANs will not have access to each others’ files unless
they share both a channel and an SS ID—an unlikely occurrence.)
You can even establish two independent wireless LANs in the
same office—ad-hoc or infrastructure—with no noticeable degra-
dation of performance.
Microwave ovens operate in the 2.4 GHz range, but most are
sealed fairly well. Any leakage of radio energy in this range falls off
very rapidly as one moves away from the oven. Your ZoomAir
Card is designed to reject microwave interference. In the worst
case, a microwave oven may theoretically slow data transmission; in
actual tests, the effect has been found to be minimal. You would
practically have to put your computer on top of a microwave oven
for you to notice a difference in data rate.
How Do I Connect to My Wired LAN?
Your ZoomAir Wireless network can be easily connected to a
wired LAN using an Access Point. ZoomAir Access Point Soft-
ware, available separately, lets you use one of the PCs already on
your wired LAN as an Access Point. Simply install the ZoomAir
Wireless LAN Card and the Access Point Software, and the wired
and wireless members of your LAN work seamlessly together. Us-
ing a computer as an Access Point should have little, if any, notice-
able effect on the computer’s performance. The ZoomAir Access
Point Software also includes SyGate™, a program that allows one
computer on your network to share Internet access with the rest of
your LAN.
For more demanding installations, Zoom sells a dedicated hard-
ware-based Access Point, the ZoomAir AP128™. The ZoomAir
AP128 is a wireless Access Point that can also be configured as a

Introduction 9
router, ISDN adapter for access to a remote LAN or the Internet,
and/or remote access service.
Your dealer or reseller can guide you in the selection of software
and hardware Access Point solutions for your LAN.
What Do I Need to Install a Wireless LAN?
For any wireless network, you need a ZoomAir Wireless LAN
Card for each computer on the network. You also need to install
the accompanying software for each computer that will not be an
Access Point. For an infrastructure network, you need the
ZoomAir Access Point Software instead of the client software, or
the ZoomAir AP128, for each Access Point.
ZoomAir products come in the following packages and configura-
tions:
The ZoomAir Wireless LAN Card
The ZoomAir Wireless LAN Card includes the following:
• A Type II PCMCIA card containing the radio components and
integrated antenna (inside the small rectangular extension be-
yond the main body of the card).
• Software (on diskettes or CD) containing drivers and other
software for setting up the computer.
• This Manual.
The ZoomAir Wireless LAN Card with ISA
Adapter
The package, consisting of the ZoomAir PC Card and an ISA
adapter, includes the following:
• A circuit board that fits in an ISA or EISA slot inside the
computer and provides a PC Card socket for the Wireless
LAN Card.
• A Type II PCMCIA card containing the radio components and
integrated antenna (inside the small rectangular extension be-
yond the main body of the card).

10 ZoomAir Wireless LAN Owner’s Manual
• Software (on diskettes or CD) containing drivers and other
software for setting up the computer.
• This Manual.
The ZoomAir Access Point Software
The ZoomAir Access Point Software package includes the follow-
ing:
• ZoomAir Wireless LAN Access Point Software, on CD or
diskettes. This product also includes SyGate for shared Inter-
net access.
• Manuals for installing the software.
Note: Each Access Point must be identified uniquely on the
network. This is achieved by a key provided on a ZoomAir
Access Point diskette, which is different for each package.
You will therefore need to purchase one ZoomAir Access
Point software package for each Access Point on your
network.
ZoomAir AP128
See your dealer or retailer for information on what is included with
the ZoomAir AP128.
Computers on Your Network
You also need the following for each computer on your wireless
network:
• A 486 or Pentium® processor or equivalent running Windows
95 or 98, or a Pentium 120 or faster running NT 4.0 Worksta-
tion with Service Pack 3 or above.
• At least 8 MB of memory.
• A hard drive with at least 5 MB free.
• A PCMCIA Type II or Toshiba PC Card slot, either as part of
the computer or as part of the Zoom ISA adapter.

Introduction 11
• A computer that serves as an Access Point to a wired network
must also have the appropriate wired network connection
(Network Interface Card, or NIC) and software. We recom-
mend a minimum of Pentium II and 32 MB of RAM.
You may also need the Windows installation CD-ROM disc that
came with each computer. Note that this disc may be different for
each computer on the network because of variations in operating
systems and the release dates of the CDs.
Shared Internet Access
If you want to share Internet access on one of your computers,
that computer will need the following:
• An established Internet connection using appropriate software
and a 56K modem, ISDN terminal adapter, cable modem with
adapter, or xDSL device.
• Internet gateway software, such as SyGate. SyGate is included
with the ZoomAir Access Point Software. (Internet gateway
software can also be used with an ad-hoc network. There are
several kinds, which you can purchase and install after you es-
tablish your wireless network. For details about SyGate soft-
ware, visit the Web site at
www.zoom.com/bnp/zoomair/sygate.shtml.)
Installation Preview
These are the major steps in installing the ZoomAir Wireless LAN
on each computer in your network:
Chapter 1: Planning Your Wireless Network. This chapter
guides you through a site survey to determine the best
placement of your wireless LAN members.
Chapter 2A and 2B: Installing the ZoomAir Wireless Card.
The ZoomAir PC Card simply plugs into the PCMCIA slot
on the computer. An installation Wizard then takes you
through an easy setup process. Separate chapters cover
Windows 95/98 and NT 4.0.
Chapter 3: Sharing Printers and Files. Each client computer
on your wireless network can share its printer and any of the

12 ZoomAir Wireless LAN Owner’s Manual
files on its hard drive. This chapter guides you through the
process.
Chapter 4: Changing Security Settings. You can increase the
security of your wireless network by giving it a unique name
(SSID) and by implementing Wired Equivalent Privacy
software, which encrypts all data transferred over the wire-
less LAN.
Chapter 5: Advanced Settings. A powerful Configuration
Utility allows you to customize and manage your wireless
LAN.
Chapter 6: Solving Common Problems. Consult this chapter
for advice and troubleshooting.
Appendix A: Installating the ISA Adapter. Consult this ap-
pendix for installation of the ISA adapter.
Appendix B: Regulatory Information. This appendix gives
information about ZoomAir’s compliance with govern-
mental regulations.

1 Planning Your Wireless Network 13
1
Planning Your Wireless
Network
The installation of any new computer hardware or software is
more likely to be successful with a little planning. This chapter
covers the following:
• Simple Ad-Hoc Network
• Infrastructure All-Wireless Network
• Infrastructure Network with Access Point to a Wired LAN
Simple Ad-Hoc Network
If you are setting up an all-wireless ad-hoc network in a home or
small office, there is not much planning to do. You probably al-
ready know which computer has a printer that you want to share,
and which computers have files that the other members of the
network should have access to. Without an Access Point, each cli-
ent computer should be within 300 feet (about 90 meters) of all the
others in most indoor settings. This figure may be lower depending
on the thickness and composition of the walls and floors of the
building. In most homes and small offices, you would find it diffi-
cult to separate the client computers by more than 75 to 100 feet
(about 25 to 30 meters)—you’ll simply run out of building!
Outdoors, or in large structures with no barriers, the range is
greater—up to 1,000 feet (about 300 meters).
Infrastructure All-Wireless Network
An infrastructure wireless network with a centrally located Access
Point can double the range of an all-wireless network. You might
find an Access Point useful, for instance, in a large, L-shaped office
with thick, steel-reinforced walls. At the time this Manual was

14 ZoomAir Wireless LAN Owner’s Manual
written, wireless bridging between Access Points was not sup-
ported for all-wireless networks.
Infrastructure Network with Access Point
to a Wired LAN
If you are installing an infrastructure wireless network to connect
to a wired LAN, you will need one Access Point for each 100 to
300 linear feet (about 30 to 90 meters) in typical indoor environ-
ments; this translates to one Access Point for approximately each
8,000 to 70,000 square feet (about 730 to 6,500 square meters).
Outdoors, or in large structures with no barriers, the range may be
as high as 1,000 feet (about 300 meters).
You are not limited to one floor; a ZoomAir wireless network
should work between floors, with effective distances depending on
the composition of the floors and ceilings.
Because of the great flexibility of wireless networks, you can add
new members (and new Access Points to a wired network) at any
time.
Strategy
There are at least two procedures you can follow for installing an
infrastructure network. Either will work well, but it is best to start
with a plan.
All Clients First
Install all of your ZoomAir Wireless Cards as ad-hoc clients, ac-
cepting the defaults in the setup software. This will give you a
functioning ad-hoc wireless network, which you can test and trou-
bleshoot before joining it to the wired network. When you are sat-
isfied with this ad-hoc network, you can “promote” the client you
have designated to be an Access Point simply by uninstalling its
drivers and installing the Access Point drivers. At that point you
can also use the configuration software to add extra security fea-
tures if you want to. Then you can change each of the remaining
clients from ad-hoc to infrastructure mode and add matching secu-
rity features.

1 Planning Your Wireless Network 15
The advantage of this plan is that you install the simplest ad-hoc
network first and troubleshoot it. It also makes the most sense if
you have been operating an ad-hoc wireless network for a while
and want to join it to a wired network later.
Access Point(s) First
Install your Access Point(s) first, according to the instructions in
the ZoomAir Access Point Software Manual. As you complete
each Access Point installation, you can modify the settings to in-
crease security, etc. Then install the infrastructure clients, modify-
ing each one as you go to match any special security settings of the
Access Point(s).
The advantage of this plan is that you need to visit each Access
Point and client only once.
Site Survey
For the initial setup of either an ad-hoc or infrastructure wireless
network, you may want to conduct a site survey. For a home or
small office, this could be a simple walk-through, perhaps with a
measuring tape, to determine the distances between potential
members of your network.
For a larger office you may want to do a more formal survey, as
follows:
1. Install the ZoomAir PC Card on two laptop computers and
configure them for ad-hoc operation.
2. Establish a connection between the computers (sharing a file
folder, for instance).
3. Move the computers around in your work area to typical loca-
tions for network members—especially to the locations that
are farthest apart. As you do so, attempt some file transfers
and monitor the connection to be sure it is maintained.
4. If you cannot maintain a reliable wireless connection at the
extremes of your work area (ad-hoc) or at the farthest point
from your proposed Access Point (infrastructure), your op-
tions are to relocate the network members, relocate the Access
Point, or add an Access Point.

16 ZoomAir Wireless LAN Owner’s Manual
Another consideration to keep in mind for both ad-hoc and infra-
structure networks is that you may want to keep one or more
computers in a fixed location and running all the time:
• Any computer with a resource that must be regularly shared,
such as a printer, a drive or file folder, or a modem.
• The computer that serves as an Access Point to the wired
LAN.
For less formal situations—at home or in a small office—
computers on the wireless LAN can be turned on and off as
needed.

2A Installing the ZoomAir PC Card under Windows 95 and 98 17
2A
Installing the ZoomAir PC Card
under Windows 95 and 98
Installing your ZoomAir Wireless PC Card in a Windows 95 or
Windows 98 computer is a three-step process:
• Insert the card
• Install the drivers
• Run the ZoomAir setup software.
Note: If you are installing ZoomAir on a computer that has a
previous version of ZoomAir installed on it, or if you ever
need to uninstall the ZoomAir PC Card, go to Appendix
Bfor instructions on removing old drivers.
Inserting the ZoomAir Card
Note: If you are installing ZoomAir with the ISA adapter card,
go to Appendix A now to install the adapter. Then return
to this chapter to complete the installation.
11 The computer should be turned off.
Write down the serial number of the card in the Important
Information table on page 64. Also write down the MAC
(Media Access Control) address on the bottom label. You may
not need this in an ad-hoc network, but it is a good idea to
have it recorded for future reference if you are installing an
infrastructure network. The number is different for every net-
work card and is its unique identifier.
22 Insert the ZoomAir Card into the PC Card slot, being careful
that it goes in straight. The label with the ZoomAir logo and
the LED indicators should be facing up. The card should slide

18 ZoomAir Wireless LAN Owner’s Manual
in easily most of the way and then offer slight resistance as the
pins are engaged. Do not force the card.
Installing the Drivers
11 Turn on the computer. As the computer starts, an installation
Wizard will ask you for a CD or a diskette.
22 You will have received a CD-ROM disc or a set of floppy
diskettes with ZoomAir. Insert the CD or the first floppy
diskette (labeled Disk 1) in the appropriate drive. Click on
Next. Windows will scan the computer’s drives and report
that it has found the driver. Click on Finish.
33 You may be asked for Computer and Workgroup information
if you do not already have a network installed in this com-
puter. The Computer name should be unique; the Workgroup
name should normally be the same for everyone on the LAN.
44 The Wizard may ask you for a file, LaunchAp.Exe, on the
Windows installation disks. This program is located, however,
on your ZoomAir CD or diskette. In the location text box,
simply type the drive letter of your ZoomAir CD (typically d:)
or diskette (typically a:). Click on OK.
55 The Wizard may ask you once again for a Windows installation
diskette or the Windows installation CD. If so, insert the disk-
ette or CD and type in its location. Be sure to use the Win-
dows installation software that came with this particular
computer. Click on OK.
66 At the end of this process, you may be asked to restart the
computer. Do this, even if you are not asked to:
• Shut down the computer. Remove any floppy diskette that
may be in the drive; then restart the computer.
Running the ZoomAir Setup Program
As the computer restarts, you will be taken through the steps to
run the ZoomAir setup program. Follow these steps:
11 Unless the ZoomAir CD is still in its drive, you will be asked

2A Installing the ZoomAir PC Card under Windows 95 and 98 19
to insert the ZoomAir installation CD or Disk 1 from the set
of installation floppies. Insert the disc or diskette as needed
and click on Retry.
22 The ZoomAir Setup program will start. Click on Next to con-
tinue.
You will be asked to select the setup you prefer. Click on
ZoomAir 802.11 Client Software and then click on Next.
33 You will be asked to type in a unique SSID (Service Set Identi-
fier), which is a name for your wireless network. If you are
sure your network will not be near any other ZoomAir wire-
less networks, you can accept the default. Otherwise enter a
word or phrase.
This identifier must be the same for all computers that
will be in the same wireless network. Members of your
network should regard the SSID as a password and keep
it secret. The SSID is case-sensitive; you must use capital
and lower-case letters in the same way for all ZoomAir
units.
If you ever need to change the SSID, refer to Chapter 4.
44 Select a network mode when the setup program prompts for
it. Your two choices are AdHoc and Infrastructure. Choose
AdHoc unless you are installing a client in an infrastructure
network. (For a description of ad-hoc and infrastructure net-
works, see Why Wireless? on page 6.)
55 The Setup program will start copying files onto the computer’s
hard drive. If you are installing from ZoomAir diskettes, you
will be asked at some point to insert Disk 2. (Do not change
the path information in this dialog box.)
You may be asked for the Windows installation CD. If so, in-
sert the CD that came with this particular computer. Copying
files from the Windows CD may take some time.
66 A Network Configuration dialog box may appear briefly. Do
not enter information into it; the Setup program will take care
of this.
77 Depending on your configuration, you may see other screens,
including a Network Settings Change box asking you to re-
start the computer.

20 ZoomAir Wireless LAN Owner’s Manual
Ignore these screens; they will appear and disappear on their
own. Wait for the Setup Complete message, which will
prompt you to restart the computer. Click on Yes. Then re-
move any diskette in the floppy drive and click on Finish.
After the computer has restarted, you should see an icon
for the ZoomAir Card in the system tray (at the right-hand end of
the taskbar). The icon may take several seconds to appear; it looks
like a small computer monitor. If this is the first ZoomAir Card
you have installed, the icon will be red.
Repeat this installation for the second ZoomAir Card. If you have
accepted the default settings, the two cards should begin to com-
municate. You can verify this because the icon in the system tray
will turn green. (The change in color may take several seconds.)
As you add each new ZoomAir Card to a computer, it should join
the wireless LAN and display a green icon in its system tray.
Removing the ZoomAir Card
If you ever need to remove your ZoomAir Card, do not simply
pull it from the PC Card slot. It is not “hot-swappable.”
Follow this procedure: In your system tray (the area at the right
end of the taskbar), click on the icon for PCMCIA devices. Follow
the prompts to stop your PCMCIA device. You may then remove
the ZoomAir Card. If there is no PCMCIA icon in the taskbar,
shut down the computer and turn off the power before removing
the ZoomAir Card.
Interpreting the LEDs
The ZoomAir Card has three lights that indicate its operating char-
acteristics:
Red indicates that power is being provided to the PC Card. If the
LED is not lit, the card may not be plugged in securely or the card
slot may have been powered down by the computer’s operating
system.