The "802.11n driver download" search often leads users to resources by Jasvendra Parmar
Before downloading, determine which manufacturer made your internal chip: Plug in the adapter to a USB 2.0 or 3.0 port. Device Manager and select it). Look under Network Adapters
I couldn't find a direct link to the 802.11n driver download from Jasvendra Parmar. However, I can provide you with some general steps to download the driver: