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The TP-Link TL-WN821N is a mid-range to high-end wireless-n USB adapter similar to the TP-Link TL-WN727N.

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great reception, will work through a floor and a few walls

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works well with Windows 7, software installation is quick and easy

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rarely if ever drops a connection with a reliable wireless router

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firmware available for making it work with Linux

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USB connector cap is easy to lose

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a bit too bulky for a notebook, can get in the way

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not completely plug-and-play, still need to install software

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The TP-Link TL-WN821N is a mid-range to high-end wireless-n USB adapter similar to the TP-Link TL-WN727N. The main advantages that the TL-WN821N offers over the TL-WN727N are its 300Mbps wireless connection speeds (twice that of the TL-WN727N), internal Intelligent Antennas and CCA technology which automatically avoids channel conflicts. Otherwise, the two adapters sport similar features, namely QSS functionality.

The TL-WN821N's 300Mbps wireless connection speeds ensures extremely fast local internet speeds, eliminating LAN speed bottlenecking even with 1 Gigabit internet connections. Its internal Intelligent Antennas ensure that the TL-WN821N offers optimal signal strength even through multiple floors and in less-than-ideal settings. Additionally, the TL-WN821N's CCA technology automatically avoids signal conflicts, greatly lowering the chances of connection errors.


  • Provides two methods of operation: Infrastructure and Ad-Hoc
  • Adopts MIMO technology for wireless rates of up to 300Mbps
  • Adopts CCA technology which automatically avoids channel conflicts using its channel selection feature
  • Quick Secure Setup, complies with WPS for worry free wireless security
  • Supports 64/128-bit WEP, complies with 128 bit WPA standard(TKIP/AES), supports MIC, IV Expansion, Shared Key Authentication, IEEE 802.1X
  • Simple configuration and monitoring
  • Supports Roaming technology, guaranteeing efficient wireless connections.
  • Supports Windows 2000/XP/Vista/7
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