It should install and give you a message saying it has done so. If you prefer one-click and one-stop solution to quickly and easily download the correct Atheros drivers automatically, or update to the latest Atheros drivers automatically, such as Atheros wireless drivers, Atheros ar9485 drives, Atheros Bluetooth drivers, Atheros communications drivers, Atheros drivers for Windows 10, etc. In the dialogue box that opens, choose 'Browse my computer for driver software', then direct it to the folder that you just unzipped (probably located in your downloads folder). Click on the driver tab, then click on the update driver button.

Find your ar3012 under network adapters, right click it, and select properties. Right click the windows icon in the bottom left and select device manager. These links don't download an installer however, you must install them through device manager. It will download as a zip file, which you must unzip (I use 7zip myself). If your running 64-bit Win10 grab the 64-bit Win8.1 INF file download, and if your running 32-bit Win10 grab the 32-bit Win8.1 INF file download (the one at the top of the page is the most recent). At the moment there is no Windows 10 specific driver, but the windows 8.1 driver should work fine.

Atheros ar9485 drivers