Excerpt: I needed to make my old PC wireless to use it on my wifi at home. I had no idea such a product existed until I started looking. Staples had just what I needed for less than $12 and it is smaller than a USB thumb drive. I love it. Easy to install, easy to use.
Summary: I needed this device to connect my PC to my hotspot mifi in a small office. I don't need much range, but the performance of this little dongle really surpassed my expectation. To get an idea on the range I placed the mifi 40 feet away through 3 plaster walls and can still get 4 bars with no discernible change in speed.