For the best results, use one of the following methods to find and install your driver: MERCURY Wireless N Adapter Driver for System

Getting your connected is straightforward if you have the right driver. While "N300" refers to the wireless speed (up to 300 Mbps), these adapters—often sold under the Mercury or Mercusys brand—typically use common chipsets like those from Realtek or MediaTek . Driver Download & Installation Guide