2.4 GHz / 5 GHz Tri-Mode Dualband Wireless Router

D-Link Air Xpert DI-774

Manual
Building Networks for People

Contents

Package Contents...3 Introduction....4 Wireless Basics...6 Getting Started...10 Using the Configuration Menu..12 Networking Basics...41 Troubleshooting...70 Technical Specifications...76 Contacting Technical Support..79 Warranty and Registration..80

Package Contents

Contents of Package:
D-Link Air Xpert DI-774 2.4GHz/5GHz Tri-Mode Dualband Wireless Router Power Adapter 5V DC, 3.0A Manual on CD Quick Installation Guide Ethernet Cable
Note: Using a power supply with a different voltage rating than the one included with the DI-774 will cause damage and void the warranty for this product.
If any of the above items are missing, please contact your reseller.
System Requirements For Configuration:
Computer with Windows, Macintosh, or Linux-based operating system with an installed Ethernet adapter

Introduction

The new D-Link Air Xpert DI-774 Tri-Mode Dualband Wireless Router is a next generation broadband router that simultaneously serves both 802.11a wireless networks at 54 Mbps (72 Mbps in Turbo mode), 802.11g wireless networks at 54Mbps, and 802.11b. The DI-774 will automatically obtain an IP address and forward additional IP addresses to multiple clients for a seamless Ethernet network connection and shared Internet access. At up to 54Mbps in both the 5GHz and 2.4GHz frequency ranges, the D-Link Air Xpert DI-774 router delivers data at speeds 5 times faster than previous wireless standards. After completing the steps outlined in the Quick Installation Guide (included in your package) not only will you have the ability to share information and resources, but you will also be able to enjoy the freedom that wireless networking delivers.
The DI-774s web-based user interface (accessible from most Internet browser applications), the DI-774 will work with most popular operating systems, including Windows, Macintosh, Linux and can be easily integrated into a large network. Please take a look at the Getting Started section in this manual to see an example of an Infrastructure network using the DI-774.

Connections

Pressing the Reset Button restores the router to its original factory default settings.
LAN ports automatically sense cable type when connecting to Ethernetenabled computers.
The WAN port is the connection for the Ethernet cable to the Cable or DSL modem
Receptor for the Power Adapter

Features & Benefits

Supports data transfer rates of up to 54 Mbps in 2.4GHz and 5 GHz frequency spectrums Wireless range of up to 900 feet* 802.11a, 802.11g, and 802.11b compatible Supports up to 152-bit WEP Encryption at 2.4GHz, and up to 152-bit WEP with Enhanced Dynamic Keying at 5 GHz Eight non-overlapping channels in 5GHz; Three non-overlapping channels in 2.4 GHz Utilizes Direct Sequence Spread Spectrum (DSSS) and Orthogonal Frequency Division Multiplexing (OFDM) at 2.4GHz Utilizes Orthogonal Frequency Division Multiplexing (OFDM) Easy-to-use Web-based configuration User level security 3 Year Warranty (USA only)
*Environmental Factors may Adversely Affect Range.
LED stands for Light-Emitting Diode. The DI-774 has the following LEDs:

LED Activity

A steady light indicates a connection to a power source
M1 M2 WAN WLAN 802.11a WLAN 802.11g Local Network (Ports 1-4)
A solid light indicates that the DI-774 is ready A solid light indicates that the unit is defective A solid light indicates connection on the WAN port. This LED blinks during data transmission. A solid light indicates that the 802.11a wireless segment is ready. The LED blinks during 802.11a wireless data transmission. A solid light indicates that the 802.11g wireless segment is ready. The LED blinks during 802.11g wireless data transmission. A solid light indicates a connection, a blinking light indicates data transmission to an Ethernet-enabled computer on ports 1-4.

D-Link wireless products are based on industry standards to provide easy-touse and compatible high-speed wireless connectivity within your home, business or public access wireless networks. Strictly adhering to the IEEE standard, the D-Link wireless family of products will allow you to securely access the data you want, when and where you want it. You will be able to enjoy the freedom that wireless networking delivers. A wireless local area network (WLAN) is a cellular computer network that transmits and receives data with radio signals instead of wires. Wireless LANs are used increasingly in both home and office environments, and public areas such as airports, coffee shops and universities. Innovative ways to utilize WLAN technology are helping people to work and communicate

Wireless Basics

more efficiently. Increased mobility and the absence of cabling and other fixed infrastructure have proven to be beneficial for many users. Wireless users can use the same applications they use on a wired network. Wireless adapter cards used on laptop and desktop systems support the same protocols as Ethernet adapter cards. Under many circumstances, it may be desirable for mobile network devices to link to a conventional Ethernet LAN in order to use servers, printers or an Internet connection supplied through the wired LAN. A Wireless Router is a device used to provide this link. People use wireless LAN technology for many different purposes:
Mobility - Productivity increases when people have access to data in any
location within the operating range of the WLAN. Management decisions based on real-time information can significantly improve worker efficiency.
Low Implementation Costs WLANs (Wireless Local Area Networks)
are easy to set up, manage, change and relocate. Networks that frequently change, both physically and logically, can benefit from WLANs ease of implementation. WLANs can operate in locations where installation of wiring may be impractical.
Installation Speed and Simplicity - Installing a wireless LAN system
can be fast and easy and can eliminate the need to pull cable through walls and ceilings.
Network Expansion - Wireless technology allows the network to go where

Installation Considerations
The D-Link Air Xpert DI-774 lets you access your network, using a wireless connection, from virtually anywhere. Keep in mind, however, that the number, thickness and location of walls, ceilings or other objects that the wireless signals must pass through may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or business. The key to maximizing wireless range is to follow these basic guidelines: 1. Keep the number of walls and ceilings between the DI-774 and your receiving device (e.g., the DWL-AG650) to a minimum each wall or ceiling can reduce your D-Link Air Xpert Wireless products range from 3-90 feet (1-30 meters.) Position your receiving devices so that the number of walls or ceilings is minimized. 2. Be aware of the direct line between routers and computers. A wall that is 1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over 42 feet (14 meters) thick! Try to make sure that devices are positioned so that the signal will travel straight through a wall or ceiling for better reception. 3. Building Materials make a difference - a solid metal door or aluminum studs may have a negative effect on range. Try to position wireless devices and computers with wireless adapters so that the signal passes through drywall or open doorways and not other materials. 4. Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate RF noise.

Getting Started

Right out of the box, with its default settings, the DI-774 will connect with other D-Link Air, AirPlus, AirXtremeG, and Air Xpert products. With a single IP Address from your Broadband Internet Service provider you can share the Internet with all the computers on your local network, without sacrificing speed or security, using D-Link Air networking products.

IP ADDRESS

Note: If you are using a DHCP-capable router in your network setup, such as the DI-774, you will not need to assign a static IP Address. If you need to assign IP Addresses to the computers on the network, please remember that the IP Address for each computer must be in the same IP Address range as all the computers in the network, and the Subnet mask must be exactly the same for all the computers in the network. For example: If the first computer is assigned an IP Address of 192.168.0.2 with a Subnet Mask of 255.255.255.0, then the second computer can be assigned an IP Address of 192.168.0.3 with a Subnet Mask of 255.255.255.0, etc. IMPORTANT: If computers or other devices are assigned the same IP Address, one or more of the devices may not be visible on the network. An Infrastructure wireless network contains an Access Point. The Infrastructure Network example, shown here, contains the following D-Link network devices: A wireless Broadband Router - D-Link Air Xpert DI-774 A laptop computer with a wireless adapter - D-Link Air Xpert DWL-AG650 or Air PlusXtremeG DWL-G650 A desktop computer with a wireless adapter - D-Link Air Xpert DWL-AG520 or Air PlusXtremeG DWL-G520 A Cable modem - D-Link DCM-201

WEP (Wired Equivalent Privacy) If you enable encryption on the DI-774 make sure to also enable encryption on all 802.11a wireless clients or wireless connection will not be established.

Key Type-

select HEX or ASCII
Hexadecimal digits consist of the numbers 0-9 and the letters A-F ASCII (American Standard Code for Information Interchange) is a code for representing English letters as numbers from 0-127

Keys 1-4-

input up to 4 WEP keys; select the one you wish to use.
Home > Wireless > 802.11g
Wireless Settings- choose 802.11a or 802.11g. Here, 802.11g is selected. SSIDdefault is the default setting. All devices on the network must share the same SSID. The SSID may be up to 32 characters long. 1 is the default channel for 802.11g. All devices on the network must share the same channel. select Enabled or Disabled. Disabled is the default setting. select the level of encryption desired: 64, 128 or 152-bit
ChannelWEPWEP Encryption-
WEP (Wired Equivalent Privacy) If you enable encryption on the DI-774 make sure to also enable encryption on all 802.11g wireless clients or wireless connection will not be established.

Key TypeKeys 1-4-

select HEX or ASCII input up to 4 WEP keys; select the one you wish to use.
Home > WAN > Dynamic IP Address
Dynamic IP AddressHost NameMAC AddressClone MAC Address-
most Cable modem users will select this option to obtain an IP Address automatically from their ISP (Internet Service Provider). this is optional, but may be required by some ISPs. The host name is the device name of the Router. the default MAC Address is set to the WANs physical interface MAC address on the Router. copy the MAC address of the Ethernet card installed by your ISP, and replace the WAN MAC address with this Ethernet card MAC address. It is not recommended that you change the default MAC address unless required by your ISP.
Primary/Secondary enter a DNS Address if you do not wish to use the one provided by your ISP. DNSMTUenter an MTU value only if required by your ISP. Otherwise, leave this section to its default setting of 1500.
Home > WAN > Static IP Address
Static IP AddressIP AddressSubnet MaskISP Gateway Address-
select this option to set static IP information provided to you by your ISP. input the IP Address provided by your ISP input your Subnet mask. (All devices in the network must have the same subnet mask.) input the Gateway address
Primary / Secondary enter a DNS Address if you do not wish to use the one provided by your ISP. DNS AddressMTUenter an MTU value only if required by your ISP. Otherwise, leave this section to its default setting of 1500.

Advanced > Applications
Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and others. These applications have difficulties working through NAT (Network Address Translation). Special Applications makes some of these applications work with the DI-774. If you need to run applications that require multiple connections, specify the port normally associated with an application in the Trigger Port field, select the protocol type as TCP or UDP, then enter the public ports associated with the trigger port to open them for inbound traffic. The DI-774 provides some predefined applications in the table on the bottom of the web page. Select the application you want to use and enable it. Note! Only one PC can use each Special Application tunnel.
Name: Trigger Port: Trigger Type: Public Port:
this is the name referencing the special application. this is the port used to trigger the application. It can be either a single port or a range of ports. this is the protocol used to trigger the special application. this is the port number on the WAN side that will be used to access the application. You may define a single port or a range of ports. You can use a comma to add multiple ports or port ranges. this is the protocol used for the special application.

Public Type:

Advanced > Filters > IP Filters
Filters are used to deny or allow LAN (Local Area Network) computers from accessing the Internet. The DI-774 can be setup to deny internal computers by their IP or MAC addresses. The DI-774 can also block users from accessing restricted web sites. IP FiltersUse IP Filters to deny LAN IP addresses from accessing the Internet. You can deny specific port numbers or all ports for the specific IP address.
IPPortProtocol TypesSchedule-
the IP address of the LAN computer that will be denied access to the Internet. the single port or port range that will be denied access to the Internet. select the protocol type this is the schedule of time when the IP Filter will be enabled.
Advanced > Filters > URL Blocking
URL Blocking is used to deny LAN computers from accessing specific web sites by its URL. A URL is a specially formatted text string that defines a location on the Internet. If any part of the URL contains the blocked word, the site will not be accessible and the web page will not display.

Firewall RulesNameActionSourceDestinationSchedule-
enable or disable the Firewall Rules enter a name for the rule allow or deny IP traffice through the router enter the IP Address range enter the IP Address range; the Protocol; and the Port Range select Always or enter the Time.

Advanced > DMZ

If you have a client PC that cannot run Internet applications properly from behind the DI-774, then you can set the client up to unrestricted Internet access. It allows a computer to be exposed to the Internet. This feature is useful for gaming purposes. Enter the IP address of the internal computer that will be the DMZ host. Adding a client to the DMZ (Demilitarized Zone) may expose your local network to a variety of security risks, so only use this option as a last resort.

DMZIP Address-

enable or disable the DMZ. The DMZ (Demilitarized Zone) allows a single computer to be exposed to the Internet. enter the IP Address of the computer to be in the DMZ
Advanced > Performance > 802.11a
Wireless PerformanceData RateTransmit PowerBeacon intervalRTS Threshold-
select 802.11a or 802.11g. Here, 802.11a has been chosen. This screen displays the wireless performance features of the Access Point portion of the DI-774. Auto is the default selection. Select from the drop down menu for your selection. full is the default selection. Select from the drop down menu for your selection. beacons are packets sent by the DI-774 to synchronize a wireless network. Specify a value. 100 is the default setting and is recommended. this value should remain at its default setting of 2346. If inconsistent data flow is a problem, only a minor modification should be made. this value should also remain at its default setting of 2346. If you experience a high packet error rate, you may slightly increase your Fragmentation value within the range of 256-2346. Setting the Fragmentation value too low may result in poor performance. (Delivery Traffic Indication Message) 1 is the default setting. A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast messages.

Fragmentation-

DTIM interval-

Authentication-

select Open system or Shared Key Open System - the DI-774 will be visible to all devices on the network. This is the default setting Shared Key - in this mode, in order to access the DI-774 on the network, the device must be listed in the MAC Address Control List
Advanced > Performance > 802.11b+
Wireless PerformanceTX RatesTransmit PowerBeacon interval-
Select 802.11a or 802.11g. 802.11g is selected here. Displayed in this window are the Wireless Performance features for the Access Point portion of the DI-774. Auto is the default selection. Select from the drop down menu for your selection. full is the default selection. Select from the drop down menu for your selection. beacons are packets sent by the DI-774 to synchronize a wireless network. Specify a value. 100 is the default setting and is recommended. this value should remain at its default setting of 2346. If inconsistent data flow is a problem, only a minor modification should be made. this value should also remain at its default setting of 2346. If you experience a high packet error rate, you may slightly increase your Fragmentation value within the range of 256-2346. Setting the Fragmentation value too low may result in poor performance. (Delivery Traffic Indication Message) 1 is the default setting. A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast messages. select Open system or Shared Key the DI-774 will be visible to all devices on the network. This is the default setting in this mode, in order to access the DI-774 on the network, the device must be listed in the MAC Address Control List
RTS ThresholdFragmentation-
AuthenticationOpen System Shared Key -
CTS ModeCTS (Clear To Send) is a function used to minimize collisions among wireless devices on a wireless local area network (LAN). CTS will make sure the wireless network is clear before a wireless client attempts to send wireless data. Enabling CTS will add overhead and may lower wireless throughput. CTS is typically used in a pure 802.11g environment. If CTS is set to None in a mixed mode environment populated by 802.11b clients, wireless collisions may occur frequently. CTS will always be used to make sure the wireless LAN is clear before sending data. CTS wilCTS will monitor the wireless network and automatically decide whether to implement CTS based on the amount of traffic and collisions that occurs on the wireless network. l always be used to make sure the wireless LAN is clear before sending data.

Tools > Firmware

Firmware Upgrade- click on the link in this screen to find out if there is an updated
firmware; if so, download the new firmware to your hard drive.

Browse-

after you have downloaded the new firmware, click Browse in this window to locate the firmware update on your hard drive. Click Apply to complete the firmware upgrade.

Tools > Misc

Ping TestRestart DeviceBlock WAN PingDiscard Ping from WAN sideVPN Pass Through-
the Ping Test is used to send Ping packets to test if a computer is on the Internet. Enter the IP Address that you wish to Ping, and click Ping click Reboot to restart the DI-774 if you choose to block WAN Ping, the WAN IP Address of the DI-774 will not respond to pings. Blocking the Ping may provide some extra security from hackers. click Enabled to block the WAN ping the DI-774 supports VPN (Virtual Private Network) pass-through for both PPTP (Point-to-Point Tunneling Protocol) and IPSec (IP Security). Once VPN pass-through is enabled, there is no need to open up virtual services. Multiple VPN connections can be made through the DI-774. This is useful when you have many VPN clients on the LAN network. PPTP- select Enabled or Disabled
IPSec- select Enabled or Disabled DDNSfill in the required fields to use the Dynamic Domain Name Service (DDNS) feature.

Status > Device Info

Device Information- This screen displays information about the DI-774 Status > Log

View LogLog Settings-

this screen displays the activity on the DI-774 for advanced features, click on Log Settings
Status > Log > Log Settings
SMTP Server / IP AddressEmail AddressLog Type-
enter the proper SMTP Server information or the IP address
enter the email address of the receipient who will receive the email logs. admin can specify which surveillance they want to log. Check mark the box for specific activities.

Status > Stats

Traffic Statistics-
displays the receive and transmit packets that are passing through the DI-774. Click on Refresh, for the most recent information. Click Reset to reset the counters back to zero.

Select Use the following port: From the pull-down menu select the correct port for your printer (Most computers use the LPT1: port, as shown in the illustration.) Click Next
Select and highlight the correct driver for your printer. Click Next (If the correct driver is not displayed, insert the CD or floppy disk that came with your printer and click Have Disk.) At this screen, you can change the name of the printer (optional.)
Select Yes, to print a test page. A successful printing will confirm that you have chosen the correct driver.
This screen gives you information about your printer.
Click Finish When the test page has printed,
Go to Start> Printers and Faxes
A successful installation will display the printer icon as shown at right.
You have successfully added a local printer.
Sharing a network printer
After you have run the Network Setup Wizard on all the computers on your network, you can run the Add Printer Wizard on all the computers on your network. Please follow these directions to use the Add Printer Wizard to share a printer on your network: Go to Start> Printers and Faxes
Networking Basics Sharing a network printer

Select Network Printer

Select Browse for a printer
Select the printer you would like to share Click Next

Click Finish

To check for proper installation: Go to Start > Printers and Faxes
The printer icon will appear at right, indicating proper installation. You have completed adding the printer. To share this printer on your network: Remember the printer name Run the Add Printer Wizard on all the computers on your network Make sure you have already run the Network Setup Wizard on all the network computers After you run the Add Printer Wizard on all the computers in the network, you can share the printer.
Networking Basics Sharing an LPR printer
To share an LPR printer (using a print server,) you will need a Print Server such as the DP-101P+. Please make sure that you have run the Network Setup Wizard on all the computers on your network. To share an LPR printer, please follow these directions: Go to Start > Printers and Faxes Click on Add a Printer The screen to the right will appear

Select Local Printer.

Select Create a new port From the pull-down menu, select Standard TCP/IP Port, as shown.
Please read the instructions on this screen
Enter the Printer IP Address and the Port Name, as shown.

In this screen, select Custom

Click Settings

Enter the Port Name and the Printer Name or IP Address. Select LPR Enter a Queue Name (if your PrintServer/ Gateway has more than one port, you will need a Queue name.) Click OK
This screen will show you information about your printer.
Select the printer you are adding from the list of Printers. Insert the printer driver disk that came with your printer.

Click Have Disk

If the printer driver is already installed, do the following: Select Keep existing driver
You can rename your printer if you choose. It is optional. Please remember the name of your printer. You will need this information when you use the Add Printer Wizard on the other computers on your network. Click Next
Select Yes, to print a test page.
This screen will display information about your printer.
Click Finish to complete the addition of the printer. Please run the Add Printer Wizard on all the computers on your network in order to share the printer.
Note: You must run the Network Setup Wizard on all the computers on your network before you run the Add Printer Wizard.

Troubleshooting

This Chapter provides solutions to problems that can occur during the installation and operation of the DI-774 Wireless Broadband Router. We cover various aspects of the network setup, including the network adapters. Please read the following if you are having problems. Note: It is recommended that you use an Ethernet connection to configure the DI-774 Wireless Broadband Router.
1.The computer used to configure the DI-774 cannot access the Configuration menu.
Check that the Ethernet LED on the DI-774 is ON. If the LED is not ON, check that the cable for the Ethernet connection is securely inserted. Check that the Ethernet Adapter is working properly. Please see item 3 (Check that the drivers for the network adapters are installed properly) in this Troubleshooting section to check that the drivers are loaded properly. Check that the IP Address is in the same range and subnet as the DI-774. Please see Checking the IP Address in Windows XP in the Networking Basics section of this manual.
Note: The IP Address of the DI-774 is 192.168.0.1. All the computers on the network must have a unique IP Address in the same range, e.g., 192.168.0.x. Any computers that have identical IP Addresses will not be visible on the network. They must all have the same subnet mask, e.g., 255.255.255.0
Do a Ping test to make sure that the DI-774 is responding. Go to Start>Run>Type Command>Type ping 192.168.0.1. A successful ping will show four replies.

Note: If you have changed the default IP Address, make sure to ping the correct IP Address assigned to the DI-774.
Troubleshooting 2. The wireless client cannot access the Internet in the Infrastructure mode.
Make sure the wireless client is associated and joined with the correct Access Point. To check this connection: Right-click on the Local Area Connection icon in the taskbar> select View Available Wireless Networks. The Connect to Wireless Network screen will appear. Please make sure you have selected the correct available network, as shown in the illustrations below.

default

Check that the IP Address assigned to the wireless adapter is within the same IP Address range as the access point and gateway. (Since the DI-774 has an IP Address of 192.168.0.1, wireless adapters must have an IP Address in the same range, e.g., 192.168.0.x. Each device must have a unique IP Address; no two devices may have the same IP Address. The subnet mask must be the same for all the computers on the network.) To check the IP Address assigned to the wireless adapter, double-click on the Local Area Connection icon in the taskbar > select the Support tab and the IP Address will be displayed. (Please refer to Checking the IP Address in the Networking Basics section of this manual.) If it is necessary to assign a Static IP Address to the wireless adapter, please refer to the appropriate section in Networking Basics. If you are entering a DNS Server address you must also enter the Default Gateway Address. (Remember that if you have a DHCP-capable router, you will not need to assign a Static IP Address. See Networking Basics: Assigning a Static IP Address.)
Troubleshooting 3. Check that the drivers for the network adapters are installed properly.
You may be using different network adapters than those illustrated here, but this procedure will remain the same, regardless of the type of network adapters you are using.

Select the Hardware Tab

Click Device Manager
Double-click on Network Adapters
Right-click on D-Link AirPro DWL-A650 Wireless Cardbus Adapter
Select Properties to check that the drivers are installed properly

To hard-reset the D-Link Air Xpert DI-774 to Factory Default Settings, please do the following: Locate the Reset button on the back of the DI-774 Use a paper clip to press the Reset button Hold for about 10 seconds and then release After the DI-774 reboots (this may take a few minutes) it will be reset to the factory Default settings

Technical Specifications

Standards: Ports: Network Management: Network Architecture: Diagnostic LED: Range: Temperature: Operating: 0C to 40C (32F to 104F) Storing: -25C to 60C (-77F to 140F) Indoors up to 328 feet (100 meters) Outdoors up to 1,312 feet (400 meters) Power 100M Link/Act 10M Link/Act 11a WLAN 11g WLAN (4) 10/100Base-T Ethernet, RJ-45 (UTP) (Auto MDI/MDIX) (1) WAN Port (Auto MDI/MDIX) (1) Power 5V DC, 3.0A Web-Based Interface Draft IEEE 802.11g IEEE 802.11b IEEE 802.11a IEEE 802.3 and IEEE 802.3u IEEE 802.3x
Supports Infrastructure Mode
Humidity: Emissions: FCC part 15b UL1950-3 5%-95%, non-condensing
Physical Dimensions: L = 9.25 inches W = 6.25 inches H = 1.375 inches

802.11a Specifications

Data Rates: Data Security: Antenna Type: 6, 9, 12, 18, 24, 36, 48, 54 64, 128, 152-bit w/dynamic keying Access Control List 5dBi dipole antenna with diversity Power parameter software configurable
Available Channels: Thirteen channels for North America Frequency Range: 5.150 5.350 GHz
Modulation Technology: Orthogonal Frequency Division Multiplexing (OFDM) Antenna Type: 5dBi dipole antenna with diversity
802.11a Specifications (continued)
Modulation Techniques: BPSK QPSK 16 QAM 64 QAM

802.11g Specifications

Data Rates: 1, 2, 5.5, 6, 9, 11,12, 18, 24, 36, 48, 54 Mbps (with Automatic Fallback)
Data Security: 64, 128, 152-bit WEP (Wired Equivalent Privacy) Encryption
Available Channels: Eleven channels for North America. Three non-overlapping.
Frequency Range: 2.4 2.4835 GHz
Modulation Technology: Orthogonal Frequency Division Multiplexing (DSSS) - 802.11g Direct Sequence Spread Spectrum (DSSS) - 802.11b Complementary Code Keying (CCK) - 802.11b
Contacting Technical Support
You can find the most recent software and user documentation on the D-Link website. D-Link provides free technical support for customers within the United States for the duration of the warranty period on this product. U.S. customers can contact D-Link technical support through our web site, or by phone.

LIABILITY OF D-LINK UNDER THIS WARRANTY IS LIMITED TO THE PURCHASE PRICE OF THE PRODUCT COVERED BY THE WARRANTY. THE FOREGOING EXPRESS WRITTEN WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ANY OTHER WARRANTIES OR REMEDIES, EXPRESS, IMPLIED OR STATUTORY. Governing Law: This Limited Warranty shall be governed by the laws of the State of California. Some states do not allow exclusion or limitation of incidental or consequential damages, or limitations on how long an implied warranty lasts, so the foregoing limitations and exclusions may not apply. This limited warranty provides specific legal rights and the product owner may also have other rights which vary from state to state. Trademarks: D-Link is a registered trademark of D-Link Systems, Inc. Other trademarks or registered trademarks are the property of their respective manufacturers or owners. Copyright Statement: No part of this publication or documentation accompanying this Product may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from D-Link Corporation/D-Link Systems, Inc., as stipulated by the United States Copyright Act of 1976. Contents are subject to change without prior notice. Copyright 2002 by D-Link Corporation/D-Link Systems, Inc. All rights reserved. CE Mark Warning: This is a Class B product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures. FCC Statement: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the 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 communication. 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: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

PC Card Results D-Link DI-774 with Linksys WPC55AG In Same Room 5GHz (802.11a) 2.4GHz (802.11g) Signal strength 100MB download Signal strength 100MB download D-Link DI-774 with SMC SMC2336W-AG In Same Room 5GHz (802.11a) 2.4GHz (802.11g) Signal strength 100MB download Signal strength 100MB download 80% 0:58 80% 1:02:00 Separated By Floor 60% 1:08 60% 1:11 Opposite End Of House 40% 2:45 40% 3:17 90% to 100% 0:59 80% to 100% 0:51 Separated By Floor 60% to 80% 0:54 60% to 70% 0:57 Opposite End Of House 30% to 40% 1:03 30% 1:18
From One Block Away none N/A 10% 6:01
From One Block Away 40% to 60% 1:48 none N/A