Most of us post threads when asking for help, I am posting this one to say that I just plugged the TP-LINK WN722N USB wireless adapter (to a desktop PC, not a laptop), right-clicked on the connections icon, Edit connections..., added the wireless network (SSID name, password and WPA security parameters)...and voilá, it is working ok.

I thought this can be useful when having to decide for a product that is working ok in a given environment.