TP-Link TL-WN821N 300M USB wireless network card desktop computer wifi Receiver Transmitter

TP-Link TL-WN821N 300M USB wireless network card desktop computer wifi Receiver Transmitter

Product description:

Product parameters:

  • Product Name: TP- LINK TL- WN821N
  • Brand: TP-Link / Cape linking technology
  • Model: TL- WN821N
  • Model: TL-WN821N
  • Condition: New
  • Whether wireless: Wireless
  • LAN jack: USB
  • Transmission speed: 300Mbps
  • Applicable network type: Fast Ethernet
  • Service: Genius

This wireless USB adapter card is not 3G wireless network card, please look to buy the pro-Oh! Is a desktop or laptop wireless card damage received wifi wireless signal design, receiving a wireless network through the computer's USB port need they have broadband, wireless routers, and computers have a stable location of your wireless router's wireless signal available job oh. rub network does not have the function.

Another feature of this card is to simulate AP, wifi transmitter or called 'portable wifi'. There is no limit on the network share, connect to the Internet via a wired local computer, install the client software, set to be converted into a wired wifi, this function mainly for emergency use, not recommended for long-term use. in addition, the campus network, the unit network, Internet cafes and other dedicated client, restrict network share, restrict application installed cable network computer can not be shared, network cards transmit wireless functionality is available. non - card quality problems, the network itself is the problem.

300M Wireless USB Adapter

300M Wireless USB Adapter

Video contrast is 821 and 823, in addition to the size and shape differences between chips, and other functional properties are similar Oh baby this link is 821n.


11N wireless technology, 300Mbps wireless speed

    • TL-WN821N adopt MIMO architecture and CCA idle channel detection technology can fully enhance the wireless performance, effective solution to problems caused by radio signal blind spots wall, caused by long-distance, wireless signal stability enhanced to provide better performance and superior wireless connection stability.
  • QSS fast security settings, wireless network security, set the shortcut
  • Supports analog AP (Soft AP) function, access to computers with Internet access, it can be used as a wireless AP, for mobile phones, Pad Internet
    • Operating System Support

  • Windows XP / XP 64

    Windows 7 / Windows7 64

    Windows 8 / Windows8 64

    Windows 8.1 / Windows 8.1 64

    Windows 10 / Windows 10 64

Strong wireless performance
TL-WN821N using 11N wireless technology, wireless transmission rates of up to 300Mbps. Compared to traditional 54Mbps 11G products and 150M products, with higher wireless bandwidth, so the LAN data transmission efficiency, can effectively reduce the network delay, make voice and video, online games, online on-demand smooth.
TL-WN821N using 2 × 2 MIMO (Multiple Input Multiple Output) architecture with two smart antennas, the signal multiplexing transceiver, can significantly enhance its wireless reception capabilities, and enhance the stability of the wireless signal.
TL-WN821N also used the CCA (Clear Channel Assessment) empty channel detection technology, when it detects the surrounding wireless signal interference, it can automatically adjust bandwidth mode to avoid channel interference, make wireless signals plus stable. When the interference disappears, but also automatically bundled idle channel, make full use of channel bundling advantages, enhance wireless performance.
Comprehensive security
TL-WN821N support WPA-PSK / WPA2-PSK, WPA / WPA2 security and WEP encryption, all-round protection of wireless networks will not be violated, and theft.
TL-WN821N owned hardware QSS fast security settings, in line with WPS standards. In cooperation with a wireless router QSS or WPS function use, simply press the wireless router and are fast and secure QSS button on the card, or on the computer input router PIN code, you can secure than traditional WEP encryption WPA2 grade wireless security connection, no need to remember complex passwords.

Analog AP function, access via a wired local network can share Internet access and there is no limit, no limit computer installed applications, can be used as a wireless AP, for mobile phones, Pad Internet

The TL-WN821N into the Internet via a wired local connection, and do not limit the network can share Internet access on your computer, open the Soft AP function, then it is equivalent to a wireless AP, can support other laptops, cell phones, Pad and other equipment wireless Internet access.

Hardware Specifications


  • USB 2.0


  • Two built-in smart antenna


  • 69mm x 21mm x 10mm


  • Operating temperature: 0 ℃ ~ 40 ℃
  • Storage temperature: -20 ℃ ~ 70 ℃
  • Humidity: 10% ~ 95% RH non-condensing

Package Contents

  • 300M Wireless USB Adapter TL-WN821N
  • CD-ROM drive
  • User's manual
  • Warranty Card
  • Toxic and hazardous substances Description

Wireless feature

Follow the standard

  • IEEE 802.11n; IEEE 802.11g; IEEE 802.11b

Transmission rate

  • 11b: 1/2 / 5.5 / 11Mbps
  • 11g: 6/9/12/18/24/36/48 / 54Mbps
  • 11n: up to 300Mbps

Frequency Range

  • 2.4 ~ 2.4835GHz

Working channel

  • 1 ~ 13

Transmit power

  • 20dBm (large value)

Software features

Security Features

  • WPA / WPA2
  • 64/128 bit WEP encryption
  • QSS fast security settings

Other functions

  • Analog AP function

Operating System Support

  • Windows XP / XP64;
  • Windows 7 / Windows7 x64 / win8 / win8.1 / win10

NOTE: In order to get a better system compatibility, we recommend that you install a new system upgrade patch

NOTE: In order to get a better system compatibility, we recommend that you install a new system upgrade patch

Comments Enjoy high speed TP-Link TL-WN821N wireless card (hereinafter reviews from Zhongguancun Online)

TP-Link TL-WN821N wireless card overview

TP-LINK's TL-WN821N wireless card with a new design, and it supports the IEEE 802.11n standard USB interface, can meet online video, voice, high-bandwidth applications. The market is the higher cost of 11n wireless card.

TP-LINK TL-WN821N wireless card

TL-WN821N features a new black and white exterior, the front is white, the back is black, with a very careful selection of materials, feel very smooth, the whole work fine, looks very beautiful. Its external dimensions

  • 69mm x 21mm x 10mm

, The body is very compact and easy to carry out. TL-WN821N comply with IEEE 802.11n, IEEE 802.11g, IEEE 802.11b standard, wireless transfer rate of 300M. Can be well compatible with 11g, 11b equipment, and adopted the Centrino compatibility testing suitable for use with desktop and laptop.

For Type Laptop / Desktop
Networking standards IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
Network protocol CSMA / CA with ACK
Transmission rate 300Mbps
Spread Spectrum Technology Direct Sequence Spread Spectrum (DSSS)
Modulation OFDM, CCK, 16-QAM, 64-QAM
Transmit power 20dBm (large value)
Frequency Range 2.4-2.4835GHz
Working channel 1-13
Bus Interface USB
Antenna Type Built-in smart antenna
Safety Performance WPA-PSK / WPA2-PSK, WPA / WPA2, 64/128 bit WEP encryption, QSS fast security settings

TL-WN821N adopt MIMO technology, it built two smart antennas, wireless transmission to provide good performance, stability, and wide transmission range. It also adopts CCA technology automatically avoids channel conflicts using its channel. Security, TL-WN821N support 64/128/152 bit WEP encryption and WPA / WPA2, WPA-PSK / WPA2-PSK and other advanced encryption and security mechanism, but also has QSS (Quick secure Setup) feature fast security settings, in line with WPS, can easily set up wireless security.

Test Comments:

TP-LINK TL-WN821N has a beautiful appearance and small stature, it is an excellent partner notebook desktop. Its performance is very good, function is also very rich, it is simple to use and equipped with easy user management software, easily configured wireless client, the more the market value of the 11n wireless card.

Installing and using a wireless network card in Windows 8 system

Microsoft has released Windows 8Operating system EC, currently our most wireless card In this system it is normally used in Windows 8Use the system can be divided into the following two situations:

one, The system can identify and direct use (no need to install drivers)

due to Windows 8Internal system incorporates many chip card drive, so most of our wireless card can be directly Windows 8The system without having to manually install the driver specific methods are as follows:

1.After the wireless network card into your computer, the system will find the hardware and automatically install the driver, after a few moments, right-click 'Computer' on the desktop and select 'Manage'.

2.Click on the Device Manager, you can see that the card has been recognized properly.

3.Left-click on the bottom right corner of the desktop wireless network connection icon to open a list of the wireless signal. Select the corresponding own wireless router wireless signal and click the Connect button.

4.After entering your password and click Next wireless signal, you can wait a few moments after the Internet wirelessly.

After testing, the following Division I in NIC Windows 8 32On Bit Enterprise Edition can be properly recognized by the system:

TL-WN721N 3.0

TL-WN723N 2.0

TL-WN725N 1.0

TL-WN727N 3.0


TL-WN821N 4.0

TL-WN823N 1.0

two, Manually install the driver Use

After part of the wireless network card into your computer after the waiting period may not be Windows 8System identification, as follows:

Then you can try to manually install the network adapter, Windows 7Drive system to see whether the normal use of specific methods are as follows:

1.In our website to download the corresponding card Windows 7System drive.

Download Link: For more details, contact customer service (On this page, enter the product model search)

2.On the device in Device Manager, right-click on the yellow logo select 'Update Driver Software'.

3.Select 'Browse my computer for driver software'.

4.Click 'browse', locate the folder where the driver files, click 'OK'.

5.Click 'Next'.

6.If the following prompt, select 'Install this driver software'.

7.Successfully install the driver.

8.After a successful driver installation, the network adapter in Device Manager will display properly in the wireless LAN equipment, then you can search for radio signals and connections, wireless access to the Internet.

Division I the following wireless card Windows 8 32Bit Enterprise Edition in accordance with the post-install the driver using this method:

TL-WN722N 1.0

TL-WN721N 1.0

TL-WN322G + 2.0

Description: a small part of the wireless network card as TL-WN821N 1.0 / 2.0, TL-WN822N 1.0Etc. No Windows 8System drivers, can not be achieved in Windows 8Using the System under.

Here ap simulation settings way, if the wireless router to receive wireless signals, is very simple, first click the corresponding drive system is installed, and after you use the same notebook. Also receiving wireless and wired different wireless transfer while achieving this paragraph baby supports analog ap function.

Wireless card simulation AP function Setup Guide


1. Configure analog AP

Step one wireless network card driver and install the client software.

Step two analog AP function is enabled.

Step three is connected to the analog wireless AP.

Special circumstances: Analog AP share broadband / 3G connection


1. Windows XP System Simulation AP Configuration

Wireless AP can provide wireless extension of traditional wired LAN access, and general wireless card can connect as a client to the wireless AP. Our part of the wireless network card with analog AP function, not only can be used as a wireless client on the wireless network connection, You can also switch to analog AP, for other wireless clients to connect its typical application scenario is as follows:

Without a wireless router, the computer via a wired connection to a broadband line can have Internet access wireless network card with analog AP function on your computer, and set up shared access to the Internet network connections, analog AP connection can access the Internet network on a virtual 'wireless router' other wireless devices such as laptops, cell phones, PAD, etc. can be connected to an analog wireless AP shared online.

The following TL-WDN3321 example to describe the functions and virtual simulation AP wireless router setup method, as shown in the following figure.

Step one installed wireless network card driver and client software, the installation is complete, as shown below.

Step two analog AP function is enabled.

1. Select the client software in the 'advanced' option.

2. SoftAP mode, select 'open' hints 'Confirm open SoftAP mode', 'OK' will display 'is set SoftAP mode, please wait', then you will be prompted 'mode is set SoftAP success'.

3. Configure AP simulation parameters, as shown below, after the configuration is complete click 'Apply'.

Internet Connection Sharing: When there are multiple network connections on your computer, choose to connect to the Internet network connection, in this case a 'local connection', for example, select local connection corresponding card as 'virtual wireless routers' WAN interfaces .

Network Name: NIC sent to the wireless network name (SSID) when SoftAP mode, that is to search for the wireless device simulation AP wireless network name.

Band: wireless band SoftAP work, since the dual-band wireless card supports both 2.4GHz, and support 5GHz, so when setting analog AP need to select the band to work under Windows XP system, you can choose 2.4Ghz or 5Ghz Windows 7 system does not. support band selection, the default work in the 2.4GHz band.

Safe Mode: Analog AP wireless encryption type, recommended to select WPA2-PSK.

Password Type: encryption of the wireless network, it is recommended to select AES.

Security Key: When connecting analog AP wireless network need to enter the password.

IP Address: The IP address of the wireless network card in the open SoftAP mode, automatically generated, keep the default.

After setting the above parameters, click 'Apply'. Then right-click on the desktop "My Network Places' and select 'Properties' to open the' Network Connections', you can see the 'local connection' has been shared.

Step three wirelessly connected to SoftAP. Computer search for wireless networks, select 'SoftAP', enter the first set of 'security key'.

After the wireless connection will automatically obtain an IP address and other network parameters, then you can swim to the Internet through SoftAP.

Special case: the computer via a broadband connection or 3GConnect to the Internet, and openSoftAP When mode, 'Internet Shared connection ' And there is no option 'Broadband connection ' and '3GInternet access ' This option, how do? Here are some simulation AP Sharing broadband connection and 3GInternet connection setting method, the steps are as follows.

1.Open SoftAP mode Provided 'Internet Connection Sharing ' Other parameters outside, click 'application' .

2.Unshare local connection, right-click 'local connection ' Select 'Properties' -' Advanced ' In 'advanced ' Option will 'Internet Connection Sharing ' —— 'Allow other network users to connect through this computer's Internet Connection to connect ' Remove the hook, and then click 'determine' .

3.Set up a shared broadband connection and 3GInternet Access

(1) Share 'Broadband connection ' Right-click 'Broadband connection ' select 'Properties' -' Advanced ' In 'advanced ' Option will 'Internet Connection Sharing ' in 'Allow other network users to connect through this computer's Internet Connection to connect ' Check in at 'Home networking ' Select SoftAP Corresponding wireless network connection, in this case 'Wireless Connection 2' And then select and click 'determine' .

(2) Share 'CMCC' 3G Internet connection. Right 'CMCC' select 'Properties' -' Advanced ' In 'advanced ' Option will 'Internet Connection Sharing ' in 'Allow other network users to connect through this computer's Internet Connection to connect ' Check in at 'Home networking ' Select SoftAP Corresponding wireless network connection, in this case 'Wi-Fi 30' And then select and click 'determine' .

4.Wireless connections SoftAP Wireless computer connection search for wireless networks, select 'SoftAP' And enter the wireless security key.

Computers, mobile phones, PAD And other devices on a wireless connection SoftAP After through this 'Virtual wireless router ' To swim Internet A.

2. FAQ

Configuring Analog AP When prompted 'configuration ICS Failed 'Solution

TL-WN721N 3.0, TL-WN725N 1.0, TL-WN727N 3.0as well as TL-WDN3321 1.0Wireless LAN support SoftAP Function. OpenSoftAP Features that may pop up an error message 'Configuration ICS Fails, you can connect to SoftAP But it may not be able to use the Internet service ' Screenshot as follows:


1.Open your computer 'Services and Applications ' --- 'service ' , turn up 'Windows Firewall / Internet Connection Sharing (ICS)' Service to ensure that this service is turned on, if not open, manually turn on this service and set the startup type to Automatic.

2.If the computer network connection in the openSoftAP Before then manually share too, and this share is canceled.

3.If the computer network connection in the openSoftAP Before did not manually share before, but still an error, most likely a computer system in the openSoftAP Have been used before the application functionality over the network connection sharing, the state has not yet returned to the initial state. First Close SoftAP Function. Then turn on the computer network connection page, find a local connection, check whether the local connection status has been shared.

(1) If you have already shared, right 'local connection ' select 'Attributes ' --- 'advanced ' Tab, 'Internet Connection Sharing ' Close, click 'determine ' Then close again after the additional share a network connection is turned on. Try to re-openSoftAP Features.

(2) If you do not share, casually looking for a network connection, and then share it open and then close, then try to re-openSoftAP Features.