Pros: Easy to install, has been running fantastic since I built my machine in January 2009. No problems at all. Plus, if I wanted to sell them I can get about the same amount that I bought them for.

Cons: My only complain is I went to buy another 4gb of the sticks and they're still about the same price.

Pros: The device is tiny. I mean tiny. It's about the size of a penny. For most things that wouldn't be good, but for an external USB wireless adapter, it's PERFECT. If you put it in the back, it protrudes a lot less than anything else you'll have back there, and in the front it's so small you'll probably still be able to close any USB covers you have. Mine does, and I love that about it, I don't even know it's there! It works very well too, my machine immediately recognized it and got it to work. I haven't noticed the speed being an issue at all and it gets great reception, granted I'm only 15 or so feet away from my router, but I'm just saying, it works perfectly. I paid about $15 for it, which is a great price compared to the other ones, and it's the smallest and it's made by a company I trust.

Cons: None that I found.

Overall Review: I bought a second one for my grandmother's computer, that's how much I liked it.

Pros: Battery life is good, very easy to set up, software was nice, easy to clean, good sized, good feel, quiet, wireless works great.

Cons: none

Overall Review: I wouldn't hesitate to do it again

Pros: Installed easily, have ran flawlessly for nearly two years.

Cons: A little larger than others, but not an issue on even my small case