EW7711UTn

150MbpsWireless802.11n MinisizeUSBAdapter
EW7711UTn is a minisize wireless USB adapter which provides a simple and easy way to add or upgrade wireless connectivity to your desktop or notebook computer. This minisize USB adapter supports higher data rate up to 150Mpbs when connecting with wireless 802.11n device. You can just plug it into computer's USB port and enjoy incredible highspeed wireless network access. 150Mbps Complieswithwireless802.11nstandardswithdatarateupto1 EW7711UTn complies with wireless IEEE802.11b/g/n standards. With builtin with the latest wireless technology, EW7711UTn can increase the coverage 3 times more and reduce "dead spot within the wireless range. The transmission data rate when ts" connecting with wireless 802.11n devices is up to 150Mbps which makes signal travel farther and maintain wireless s, connectionsmuchreliablethanstandardwirelessIEEE802.11b/gnetwork. SupportsWPScompatible(WiFiProtectedSetup)button WiFi Protected Setup (WPS) is a standard for easy and secure e establishment of a wireless network. This wireless USB adapter supports software WPScompatible configuration and hardware WPS push button. When both ends of the wireless connection use wireless solution with WPS, it will automatically configure the wireless network with robust WPA data encryption and authentication. SupportsmultilanguageEZmax setupwizard The included 16 languages EZmax setup wizard and friendly UI w walk you through configuring EW7711UTn to your wireless will EW 7711UTn network. Portableandcompactdesign EA7711UTniscurrentlythesmallestwirelessadapter.Thecomp pactdesignofEW7711UTnisconvenienttocarryforallmobile users. IncludesHardwireUSBcabletoimprovetheperformance TheUSBadapterachievestheimpressiveperformancewhenplug The USB adapter achieves the impressive performance when plug gginginhardwireUSBcableincludedinthepackage. gging in hardwire USB cable included in the package
*TheEZMax SetupCDWizardonlysupportsEdimaxwirelessSeries.
FEATURESANDTECHNICALSPECIFICATIONS
Complieswithwireless802.11b/g/nstandardswithdatarateupto150Mbps Increaseswirelesscoverage3timesfurther IncludesmultilanguageEZmax setupwizard. Supports64/128bitWEP,WPA,WPA2encryptionandWPScompatible Supports 64/128 bit WEP WPA WPA2 encryption and WPS compatible. e SupportsQoSWMM,WMMPowerSavemode HARDWAREINTERFACE 1USB1.0/2.0TypeA InternalAntenna DATARATE 11b:1/2/5.5/11Mbps 11g:6/9/12/24/36/48/54Mbps 11n(20MHz):MCS07(upto72Mbps) 11n(40MHz):MCS07(upto150Mbps) SECURITY WEP64/128,WPA,WPA2 CiscoCCXSupport HardwareandSoftwareWPSconfiguration SYSTEMREQUIREMENTS Windows2000/XP/Vista/7,MacOSandLinux STANDARD IEEE80 02.11b,802.11g,802.11n FREQUENCYBAND 2.4000~2.4835GHz(Industrial ScientificMedicalBand) LED Link/Activity
INSTALLA ATION Multil languageEZmaxSetupWizard
DIMENSI ION 40(H)x x16(W)x7(D)mm
HUMIDITY&TEMPERATURE Max.95%(NonCondensing) 32~104F(0~40C)
OUTPUTPOWER 11n:14 4dBm1dBm, 11g:14 4dBm1dBm, 11b:17 7dBm1dBm
CERTIFICATIONS CE,FCC,WiFi
NETWORKSETUPDIAGRAMANDRELATEDPRODUCTS
AnexampleofhowtheEW 7711UTncanbesetup: An example of how the EW7711UTn can be setup: ConnectstheEW7711UTnwirelessadaptertoyourcomputer. SetupsthewirelessconnectionbyrunningthemultilanguageEZmax w wizard. Connectsto802.11b/g/nwirelessaccesspointorbroadbandrouter.
Maximumperformancemayvarydependingonnetworkconditionsandenviro onmentalfactors.

1-2 Safety Information

In order to keep the safety of users and your properties, please follow the following safety instructions: 1. This USB wireless network card is designed for indoor use only. DO NOT expose this network card to direct sun light, rain, or snow. 2. DO NOT put this network card at or near hot or humid places, like kitchen or bathroom. Also, do not left this wireless network card in the car in summer. 3. This network card is small enough to put in a childs mouth, and it could cause serious injury or could be fatal. If they throw the network card, the card will be damaged. PLEASE
KEEP THIS NETWORK CARD OUT THE REACH OF CHILDREN! 4. This network card will become hot when being used for long time (This is normal and is not a malfunction). DO NOT put the network card on a paper, cloth, or other flammable objects after the network card has been used for a long time. 5. Theres no user-serviceable part inside the network card. If you found that the network card is not working properly, please contact your dealer of purchase and ask for help. DO NOT disassemble the network card by your self, warranty will be void. 6. If the network card falls into water, DO NOT USE IT AGAIN BEFORE YOU SEND THE CARD TO THE DEALER OF PURCHASE FOR INSPECTION. 7. If you smell something strange or even see some smoke coming out from the network card, switch the computer off immediately, and call dealer of purchase for help.

1-3 System Requirements

CPU : Pentium III 1G above or similar Memory size : 256MB RAM One CD-ROM drive Hard Disk : At least 100MB available space One available USB 2.0 port (May not work on USB 1.1 port, and performance will be greatly reduced) Operation System : Windows 2000/XP/Vista, Mac 10.4.x and above or Linux

1-4 Package Contents

Wireless USB Adapter x1 USB Cable x1 Antenna x1 ( For EW-7711USn only ) Quick Installation Guide x1 CD (EZmax Wizard / Utility, Multi-language Quick Installation Guide & User Manual) x1
1-5 Familiar with your new wireless network card EW-7711UAn
1. 2. 3. 4. USB Connector Link/Activity LED WPS Button 3dBi high gain Antenna

If the access point you selected does not use encryption, youll be connected to this wireless access point within one minute. If the access point you selected uses encryption, please proceed to step 3.
2. If the wireless access point does not have SSID, youll be prompted to input it now. Please ask the owner of wireless access point for the exact SSID and input it here, then click OK when ready. If the SSID you provided here is wrong, youll not be able to connect to this access point.
3. If the wireless access point uses encryption, you will be prompted to input its WEP key or WPA preshared key.
4. Please ask the owner of the wireless access point you want to connect, and input the correct key here and then click OK. By checking Show Password box, the encryption key you inputted here will be displayed. If the value you inputted here is wrong, you will not be able to connect to this wireless access point.
Authentication type will be selected by the authentication type of the access point automatically, please dont change it.
However, if youre connecting to an access point uses 802.1x authentication, you have to check 802.1x box and input related information. Instructions for 802.1x authentication will be given later. 5. If the wireless access point is successfully connected, youll see a in front of the name of wireless device. symbol appears
You can put the mouse cursor over the Edimax configuration utility icon, and the brief information about link status and signal strength of current wireless connection will be shown as a popup balloon.
You can also click More / Less button ( of connected access point:
) to see detailed information
2-2-1-3 Add an Access Point to Profile
If you will connect to some specific wireless access point frequently, you can add their information to the profile. Just like the telephone directory, the profile saves all information of access points, and you can recall them anytime you wish to establish connection. You can add a found access point to profile, or input all information of an access point by yourself. To add a found access point to profile, please select a found access point first (to make it highlighted), then click Add to Profile button; to input the information of access point by yourself, please go to Profile menu and click Add button.
The setup utility will expand:
Here are descriptions of every setup item: Item Name

Profile Name

You can give this profile a name. Every profile needs a unique name. Please input the SSID of this access point. If you selected an access point from the list, and its SSID is not hidden, the SSID will be filled automatically; however, you can modify the SSID by yourself. Please select the network type: Ad hoc or Infrastructure. If youre connecting to an access point, please select Infrastructure; for point-to-point wireless connection (i.e. connecting to another computer using Ad Hoc mode), please select Ad hoc here. If you selected an access point from the list above, please keep this field unchanged. You can select the wireless output power here. If youre not too far from access point (good signal reception), you can select a lower output power to save energy; for a distant access point, you can select a higher output power. Its suggested to select Auto to let setup utility decide the best output power for you. Select the preamble for Ad hoc mode here. Available options are Auto and Long.

Encryption

WPA Preshared Key

WEP Key

To set 802.1x authentication for the access point. Please click 802.1X tab:

EAP Method

Select 802.1x EAP method from dropdown menu. Please ask the administrator of the access point you wish to connect to select a correct EAP method. Select 802.1x tunnel authentication type from dropdown menu. Please ask the administrator of the access point you wish to connect to select a correct tunnel authentication method. This pull down menu is only available when authentication type you use is 'PEAP', TLS / Smart Card', or 'TTLS'. When you use 'EAP-FAST' as authentication type, the protocol setting is always 'Generic Token Card' and can not be changed. You also need to select Soft Token or Static Password as password in ID \ Password setting. EAP Fast authentication type also have a sub-menu to set EAP fast-specific parameters:

Tunnel Authentication

If you need to use protected authentication credential, check Use protected authentication credential box, and click Import to
load.pac credential file; to remove a loaded credential file, click Remove. Session Resumption You can enable or disable session resumption here. If you dont know if you should enable session resumption or not, please ask your 802.1x authentication administrator.
Input 802.1x username (ID) and password and other information if it ID \ Password is required here. Click Show Password to show the password you tab typed. Client Certification tab Use this tab to select a local certificate from dropdown menu. If the access point you wish to connect required a specific client certificate, the certificate must be installed on your computer, and you can select the certificate here. Use this tab to use server-based certification. Please select a CA (Certificate Authority) from dropdown menu. If intermediate certificates are allowed, please select Allow intermediate certificates. Also, if you need to specify CA servers name, you can specify it in Server name field. You can select Server name must match, so the CA servers name must be the same with the value you set in Server name field; If only the domain name part of full server name must the same with the value you set in Server name field, select Domain name must end in specified name.

Server Certification tab

After you complete all information related to the access point, click OK to save the profile, or click cancel to cancel adding a new profile. If the profile is created, you will see the information in the Profile List.
2-2-2 Using Windows Zero Configuration
Windows XP and Vista has a built-in wireless network configuration utility, called as Windows Zero Configuration (WZC). You can also use WZC to configure your wireless network parameter: 1. Right-click Edimax configuration utility icon and select Use Zero Configuration as Configuration utility.
2. Right click Windows Zero Configuration icon and select View Available Wireless Networks. If you can not find the icon, please follow the procedures from step 3 to step 5.
3. Click Start button (should be located at the bottom-left corner of windows desktop), click Control Panel, then click Network and Internet Connections in Control Panel.
4. Click Network Connections.
5. Right-click Wireless Network Connection (it may have a number as suffix if you have more than one wireless network card, please make sure you right-click the Edimax 802.11n Wireless LAN Card), then select View Available Wireless Networks.
6. All wireless access points in proximity will be displayed here. If the access point you want to use is not displayed here, please try to move your computer closer to the access point, or you can click Refresh network list to rescan access points. Click the access point you want to use if its shown, then click Connect.
7. If the access point is protected by encryption, you have to input its security key or passphrase here. It must match the encryption setting on the access point. If the access point you selected does not use encryption, youll not be prompted for security key or passphrase.
8. If you can see Connected message, the connection between your computer and wireless access point is successfully established.

2-3 Profile Management

If you need to connect to different wireless access points at different time, like of access point of your home, office, cybercafe, or public wireless service, you can store the connection parameters (encryption, passphrase, security etc, etc.) as a profile for every access point, so you dont have to input these parameters every time when you want to connect to a specific wireless access point. To manage profiles, right-click the Edimax configuration utility icon located at lower-right corner of computer desktop, then click Launch Config Utility.

Click the Profile menu. All profiles will be listed in Profile List, and you can select a profile from the list, all information about selected profile will be listed.

2-3-1 Add a profile

If you want to click new profile, click Profile menu, then click Add button. Youll be prompted to input detailed information of access point, as described in Section 2-2-1-3.
2-3-2 Edit an existing profile
If you have added a profile before, and you wish to change the content of the profile, you can use this function. Please select a profile from the list first, then click Edit button. Youll be provided with the contents of selected profile, and you can edit them. Click OK to save changes, or click Cancel to discard changes.
2-3-3 Delete an existing profile
If you no longer need a profile, you can delete it. Select the profile you wish to delete from the list, and click Delete button to delete it.

2-3-4 Activate a profile

When you want to connect to a specific wireless device in the profile list, you can select it and click Activate button, to establish connection with it.
1. When you selected a profile and click Activate button to activate the profile, a icon will be displayed in front of the profile to show that the connection is failed; When the connection is successfully established, a icon will be displayed.

2-4 Advanced Settings

This wireless network card provides several advanced settings for experienced wireless users. You can change these settings to increase data transfer performance, or change operation mode. Please follow the following instructions to set advanced wireless settings: 1. Right-click the Edimax configuration utility icon located at lower-right corner of computer desktop and then click Launch Config Utility.
2. Click Advanced menu, and the following settings will appear:
Here are descriptions of every setup item:
Wireless mode Enable Tx Burst
Display the wireless operation mode of the network card. Check this box to accelerate the data transmit rate. It may not work with all wireless access point and wireless devices. Check this box and the configuration utility will adjust TCP window size automatically to get better performance. It should be safe for most of wireless environments, but if you found some problem on data transfer, uncheck this box. Check this box and you can control the threshold that the wireless network card should switch to another wireless access point with better signal quality. Only adjust value when you understand what it means and you need to roam between multiple access points. When your computer is being authenticated by wireless authentication server, a dialog window with the process of authentication will appear. This function is helpful to find out the problem when you can not be authenticated, and you can provide this information to authentication servers administrator for debugging purpose. Enable Cisco Compatible eXtensions. CCX is a wireless feature developed by Cisco used to improve the wireless performance with CCX compatible wireless devices. Check this box if you need to connect to CCX-compatible wireless devices. When you enabled CCX, the following setup items will become available: Turn on CCKM: Check this box to enable CCKM (Cisco Centralized Key Management), which enables wireless clients to roam between CCKM-enabled access points in very short time. Enable Radio Measurements: When youre connecting to CCX-compatible access point, check this box to enable radio measurement function to improve wireless connectivity. Non-Serving Channel Measurements Limit: When youre connecting to CCX-compatible access point, check this box to enable measurement on unused radio channels to improve wireless connectivity.

WMM - Power Save Enable

Direct Link Setup Enable
You also have to specify the timeout value of this directly-linked wireless device. Valid values are from 1 to 65535 (seconds), and input 0 for infinity. If you want to remove a specific wireless device from direct link table, select the device and click this button to remove it.

2-7 WPS Configuration

Wi-Fi Protected Setup (WPS) is the latest wireless network technology which makes wireless network setup become very simple. If you have WPS-enabled wireless access point, and you want to establish a secure connection to it, you dont have to configure the wireless access point and setup data encryption by yourself. All you have to do is to go to the WPS setup page of this wireless card, click a button, and then press a specific button or enter a set of 8-digit code on the wireless access point you wish to establish a secure connection - just three simple steps! For older wireless access points, its possible to perform a firmware upgrade to become a WPS-enabled access point. Since they may not have a hardware button to press for WPS setup, you can use an alternative WPS setup method - input the pin code. Every WPS-compatible wireless network card support pin code configuration method; you can just input the code to wireless access point, and the wireless access point and wireless network card will do the rest for you. This wireless network card is compatible with WPS. To use this function, the wireless access point you wish to connect to must support WPS function too. Now, please follow the following instructions to establish secure connection between WPS-enabled wireless access point and your wireless network card.
2-7-1 WPS Button (Push-Button)
With WPS button, it is easy to connect with a secure wireless network. If the wireless AP/Router supports WPS feature, just press the WPS button of the wireless AP/Router first. After press the WPS button on the wireless adaptor. The wireless adaptor will scan and connect with the AP/Router automatically, no need any further setup process and security setting.etc. in the adaptor utility.
2-7-2 WPS Setup - PBC (Push-Button Configuration)
2. Click WPS menu, and the following settings will appear.
3. Set Config Mode to Enrollee, and then push the WPS button on your wireless access point (the button used to activate WPS standby mode may have another name), or use other way to start WPS PBC standby mode as the instruction given by your wireless access points user manual.

Please note that only change the country code if you are in different country. For example: when operating this product in US, only channels 1~11 can be operated. Selection of other channels is not permitted under FCC regulations.
No forwarding among wireless clients Check this box and wireless clients will not be able to share data with each other. Check this box and the SSID will not be broadcasted to the public. Your wireless clients must know the exact SSID to be able to connect to your computer. This option is useful to enhance security level. Check this box to accelerate the data transmit rate. It may not work with all wireless access point and wireless devices. You can define the time interval that a beacon signal should be send. Default value is 100. Do not modify this value unless you know what will be affected. You can select the wireless output power here. Please select a proper output power setting according to your actual needs. You may not need 100% of output power if other wireless clients are not far from you. Select the idle time for the wireless access point. Default value is 300. Do not modify this value unless you know what will be affected.

Hide SSID

Allow BW 40 MHz Check this box to allow BW 40MHz capability. TX BURST

Beacon(ms)

TX Power

Idle Time

To save changes, click Apply button. Or you can click Default to reset all values to factory default value.

3-2 Security Setting

This wireless card supports wireless encryption in AP mode, which will encrypt the data being transferred over the air to enhance data security level. Its recommended to enable data encryption unless you wish to open your computer (and its internet connection) to the public. When you click Security Setting in the utility, the following window will appear:

Authentication Type

Please select a wireless authentication type you wish to use. Available options are Open, Shared, WPA-PSK, WPA2-PSK, and WPA-PSK / WPA2-PSK. If you want to disable wireless data encryption, you must select Open. Please select an encryption mode. The available options in this setting item will vary depending on the authentication type you select. If you select Not Use, data will not be encrypted and people with some networking knowledge will be able to read the data you transfer with proper tool. Please input the WPA pre-shared key here. Only clients with the same pre-shared key you inputted here will be able to connect to your computer. This setting is only available when you select one of WPA encryptions. You can specify the time interval to re-issue the key to your wireless clients here. You can click the button 10 seconds or Kpackets to change the unit of time interval. (every 10 seconds or a thousand data packets times the value you specified in Group Rekey Interval field). Please input the WEP encryption key here when you select WEP as encryption type. There are 2 types of WEP key: Hex (number 0 to 9, and ASCII characters A to F) and ASCII (all alphanumerical characters plus symbols). Please select the type of WEP key first, and then input the WEP key according to the type of WEP key you selected.

3-5 Event Log

This software access point will log all wireless-related activities as a log. Click Event Log tab, and the event log will be displayed.
You can click Clear to remove all entries in the log.

3-6 Statistics

If you want to know detailed information about how your software access point works, click Statistics tab, and the event log will be displayed.
You can click RESET COUNTERS button to reset all counters to zero.

3-7 About

The About tab provides you the information about version number of the configuration utility, driver, and other important information about your wireless access point.

CHAPTER IV: Appendix

4-1 Specification Standards: IEEE 802.11b/g Interface: USB 2.0 (USB 1.1 Compatible) Frequency Band: 2.4000 ~ 2.4835GHz (Industrial Scientific Medical Band) Data Rate: 11b: 1/2/5.5/11Mbps 11g: 6/9/12/24/36/48/54Mbps 11n (20MHz): MCS0-7 (up to 72Mbps) 11n (40MHz): MCS0-7 (up to 150Mbps) Securities: WEP 64/128, WPA, WPA2, Cisco CCX Support Antenna: Internal Antenna (EW-7711UAn and EW-7711USn support 3dBi high gain antenna) EW-7711UAn , EW-7711UMn V3.0 and EW-7711UTn support hardware / software WPS button (EW-7711USn supports software WPS button only ) Drivers: Windows 2000/XP/2003/Vista , MAC 10.4.x and above & Linux LED: Link/Activity Temperature: 32~104F (0 ~ 40C) Humidity: 10-95% (NonCondensing) Certification: FCC, CE

4-2 Troubleshooting

If you encounter any problem when youre using this wireless network card, dont panic! Before you call your dealer of purchase for help, please check this troubleshooting table, the solution of your problem could be very simple, and you can solve the problem by yourself! Scenario Solution 1. Click Rescan for few more times and see if you can find any wireless access point or wireless device. 2. Please move closer to any known wireless access point. 3. Ad hoc function must be enabled for the wireless device you wish to establish a direct wireless link. 4. Please adjust the position of network card (you may have to move your computer if youre using a notebook computer) and click Rescan button for few more times. If you can find the wireless access point or wireless device you want to connect by doing this, try to move closer to the place where the wireless access point or wireless device is located.
I cant find any wireless access point / wireless device in Site Survey function.
1. Please make sure the wireless network card is inserted into your Nothing computers USB port. If the Edimax configuration utilitys icon is happens black, the network card is not detected by your computer. when I click 2. Reboot the computer and try again. Launch 3. Remove the card and insert it into another USB port. Config Utility 4. Remove the driver and re-install. 5. Contact the dealer of purchase for help. 1. Click Connect for few more times. 2. If the SSID of access point you wish to connect is hidden (nothing displayed in SSID field in Site Survey function), you have to input correct SSID of the access point you wish to connect. I can not Please contact the owner of access point to ask for correct SSID. establish 3. You have to input correct security key to connect an access point connection with encryption. Please contact the owner of access point to ask with a certain for correct security key. wireless 4. The access point you wish to connect only allows network cards access point with specific MAC address to establish connection. Please go to About tab and write the value of Phy_Addess down, then present this value to the owner of access point so he / she can add the MAC address of your network card to his / her access points list. The network 1. Move closer to the place where access point is located.

is slow / having problem when transferring large files
2. Disable Tx Burst in Advanced tab. 3. Enable WMM in QoS tab if you need to use multimedia / telephony related applications. 4. Disable WMM Power Save Enable in QoS tab. 5. There could be too much people using the same radio channel. Ask the owner of the access point to change the channel number. Please try one or more solutions listed above.
4-3 Glossary 1. What is the IEEE 802.11g standard? 802.11g is the new IEEE standard for high-speed wireless LAN communications that provides for up to 54 Mbps data rate in the 2.4 GHz band. 802.11g is quickly becoming the next mainstream wireless LAN technology for the home, office and public networks. 802.11g defines the use of the same OFDM modulation technique specified in IEEE 802.11a for the 5 GHz frequency band and applies it in the same 2.4 GHz frequency band as IEEE 802.11b. The 802.11g standard requires backward compatibility with 802.11b. The standard specifically calls for: A. A new physical layer for the 802.11 Medium Access Control (MAC) in the 2.4 GHz frequency band, known as the extended rate PHY (ERP). The ERP adds OFDM as a mandatory new coding scheme for 6, 12 and 24 Mbps (mandatory speeds), and 18, 36, 48 and 54 Mbps (optional speeds). The ERP includes the modulation schemes found in 802.11b including CCK for 11 and 5.5 Mbps and Barker code modulation for 2 and 1 Mbps. B. A protection mechanism called RTS/CTS that governs how 802.11g devices and 802.11b devices interoperate. 2. What is the IEEE 802.11b standard? The IEEE 802.11b Wireless LAN standard subcommittee, which formulates the standard for the industry. The objective is to enable wireless LAN hardware from different manufactures to communicate.
3. What is Ad-hoc? An Ad-hoc integrated wireless LAN is a group of computers, each has a Wireless LAN card, Connected as an independent wireless LAN. Ad hoc wireless LAN is applicable at a departmental scale for a branch or SOHO operation. 4. What is Infrastructure? An integrated wireless and wireless and wired LAN is called an Infrastructure configuration. Infrastructure is applicable to enterprise scale for wireless access to central database, or wireless application for mobile workers. 5. What is BSS ID? A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must be configured with the same BSS ID. 6. What is WEP? WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 40 bit shared key algorithm, as described in the IEEE 802.11 standard.

7. What is TKIP? TKIP is a quick-fix method to quickly overcome the inherent weaknesses in WEP security, especially the reuse of encryption keys. TKIP is involved in the IEEE 802.11i WLAN security standard, and the specification might be officially released by early 2003. 8. What is AES? AES (Advanced Encryption Standard), a chip-based security, has been developed to ensure the highest degree of security and authenticity for digital information, wherever and however communicated or stored, while making more efficient use of hardware and/or software than previous encryption standards. It is also included in IEEE 802.11i standard. Compare with AES, TKIP is a temporary protocol for replacing WEP security until manufacturers implement AES at the hardware level. 9. Can Wireless products support printer sharing? Wireless products perform the same function as LAN products. Therefore, Wireless products can work with Netware, Windows 2000, or other LAN operating systems to support printer or file sharing. 10. Would the information be intercepted while transmitting on air? WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, WLAN series offer the encryption function (WEP) to enhance security and Access Control. Users can set it up depending upon their needs.
11. What is DSSS? What is FHSS? And what are their differences? Frequency-hopping spread-spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-sequence spread-spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip is, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without-the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers. 12. What is Spread Spectrum? Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communication systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).

13. What is WMM? Wi-Fi Multimedia (WMM), a group of features for wireless networks that improve the user experience for audio, video and voice applications. WMM is based on a subset of the IEEE 802.11e WLAN QoS draft standard. WMM adds prioritized capabilities to Wi-Fi networks and optimizes their performance when multiple concurring applications, each with different latency and throughput requirements, compete for network resources. By using WMM, end-user satisfaction is maintained in a wider variety of environments and traffic conditions. WMM makes it possible for home network users and enterprise network managers to decide which data streams are most important and assign them a higher traffic priority. 14. What is WMM Power Save? WMM Power Save is a set of features for Wi-Fi networks that increase the efficiency and flexibility of data transmission in order to conserve power. WMM Power Save has been optimized for mobile devices running latency-sensitive applications such as voice, audio, or video, but can benefit any Wi-Fi device. WMM Power Save uses mechanisms included in the IEEE 802.11e standard and is an enhancement of IEEE 802.11 legacy power save. With WMM Power Save, the same amount of data can be transmitted in a shorter time while allowing the Wi-Fi device to remain longer in a low-power dozing state.
15. What is GI? GI stands for Guard Interval. Its a measure to protect wireless devices from crossinterference. If there are two wireless devices using the same or near channel, and they are close enough, radio interference will occur and reduce the radio resource usability. 16. What is STBC? STBC stands for Space-Time Block Coding, which is a technique used to transfer multiple copies of data by multiple antenna, to improve data transfer performance. By using multiple antennas, not only data transfer rate is improved, but also the wireless stability. 17. What is WPS? WPS stands for Wi-Fi Protected Setup. It provides a simple way to establish unencrypted or encrypted connections between wireless clients and access point automatically. User can press a software or hardware button to activate WPS function, and WPS-compatible wireless clients and access point will establish connection by themselves. There are two types of WPS: PBC (Push-Button Configuration) and PIN code.
Federal Communication Commission Interference Statement

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 technician for help. FCC Caution This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the authority to operate equipment. Federal Communication Commission (FCC) Radiation Exposure Statement This equipment complies with FCC radiation exposure set forth for an uncontrolled environment. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than 20cm (8 inches) during normal operation. The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The equipment version marketed in US is restricted to usage of the channels 1-11 only.
R&TTE Compliance Statement This equipment complies with all the requirements of DIRECTIVE 1999/5/EC OF THE EUROPEAN PARLIAMENT AND THE COUNCIL of March 9, 1999 on radio equipment and telecommunication terminal Equipment and the mutual recognition of their conformity (R&TTE) The R&TTE Directive repeals and replaces in the directive 98/13/EEC (Telecommunications Terminal Equipment and Satellite Earth Station Equipment) As of April 8, 2000. Safety This equipment is designed with the utmost care for the safety of those who install and use it. However, special attention must be paid to the dangers of electric shock and static electricity when working with electrical equipment. All guidelines of this and of the computer manufacture must therefore be allowed at all times to ensure the safe use of the equipment. EU Countries Intended for Use The ETSI version of this device is intended for home and office use in Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Bulgaria, Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Romania, Slovakia, Slovenia, the Netherlands, Portugal, Spain, Sweden, and the United Kingdom. The ETSI version of this device is also authorized for use in EFTA member states: Iceland, Liechtenstein, Norway, and Switzerland. EU Countries not intended for use None Please check the declaration of conformity on www.edimax.com