ATTENTION: Note 1 does not mean that the product is bad: it just could not be really tested. I connected the antenna to my ALFA adapter awus036nhr yet considered compatible; from there, nothing has worked and the adapter is apparently hs; even putting the antenna of origin (5dbi), there is no possible connection! So back to the seller of the antenna located in Germany (in colissimo 10 euros) for a product sold 18: it's called a "good" deal! Only positive: the ultra fast delivery.