Summary: I have puchased [10-12] of these over the last two years and was truly happy with them until I recently bought the TRENDnet Wireless AC600 Dual Band USB 2.0 Adapter, TEW-804UB. This one (TEW-649UB) performs well but there is NO COMPARISON to the newer model (TEW-804UB)!
Summary: Awesome Wireless USB. So discrete. I bought two of them and both worked. I'll be buying a third soon, but with 805.11 ac and at a higher Mbps rate. I use it on my XP machine ( music server), windows 7 and windows 8.1. Best purchase