Summary: Cons: Rather large, runs warm, and the cap that that covers the male usb connector doesn't store on the other end while the adapter is in use. That would have been a nice touch. All of these are just minor annoyances, and I'm not knocking off points. Pros: Admittedly my pros don't apply to everyone. - Works much better on my Raspberry Pi than the nano usb adapter I had before. It's much faster, and less problematic.
Summary: The internal wireless adapter stopped working on my laptop and this works great as a substitute. Have had it for 4 months and haven't had any problems with it. My only complaint is that it's a little bulky but for the cost I can't really complain.
Summary: These adapters are version 4.1. They have the Ralink RT2070 chipset. They DO NOT have the Ralink RT73 chipset. By using the rt2800usb driver, you can still inject and monitor on some versions of Linux though. Works with BT5R1 GNOME 32 & BT5R1 GNOME 64 out the box.
Summary: I got this for occasional wireless through the softAP. I loaded it up and the softAP didn't work. Went to the website and downloaded the new drivers. As the new ones installed, it apparently adjusted the computers boot sector, requiring a reformat of the hard drive. Either a virus came in from the website or the driver's installation routine is really crazy.
Summary: I bought this item about 1.5 months back. I am using it in Windows XP. However this is a useless device as the connection gets lost every few seconds. The problem is not with the network because my laptop gets excellent signal all the time without interruption. SO I suggest not to buy this crap!