There are multiple revisions of the TL-WN821N, each with version specific drivers, firmware, installation guides, User Guides, and other resources.

• Some Products have more than one version, for example, a name ending with V1, V2, etc. Click here to see how to discern the hardware version. The available hardware versions are shown below, please choose the right one for your device.

Hardware Version	Description
TL-WN821N V2	Wireless N USB Adapter
TL-WN821N V1	Wireless N USB Adapter

NOTE: No upgrade between hardware versions is available.