Summary: It's not fancy, but it does what it's supposed to. For those of us who have a netbook/notebook that does not have a built in network card, nor an available wireless connection, this is a must. I normally would not choose a notebook such as this (Acer Aspire V5-122P-0889), but I received it free as part of the emachines class action settlement, so I can't complain.
Pros: Works perfectly with Windows 8. I have version C. I used the drivers that came on the disk, and after installation, it worked like a charm. Getting the same speeds on this Acer Aspire as my desktop with an internal network card.
Cons: I wish the USB cable was a little longer. A retracting cable would be even better.
Summary: I use a Google Pixel (runs Chrome OS) which only has USB ports. Unfortunately this unit doesn't work although the Chromebook will support any driver less adapter but this one just doesn't cut it.
Summary: There are THREE different versions of the DUB-E100. Version A, B, and C. On the manufacturer's site are downloadable drivers for the 3 versions of the device. Different operating systems require different drivers. Also, on some OS's, the 32-bit driver is different than the 64-bit driver. If you install the correct driver for your CPU and Operating System, most likely the device will work!