Pros: It has a pretty purple color.

Cons: The installation process was that of a garage shop operation. You could not use the standard Windows installation of new hardware, required to manually install driver (not that hard to do, but it's a red flag). Had three devices attached (one with port multiplier and two singles), would lose one of the single devices after about 5 hours. Removed the device that it had problems with and replaced it with a new Mybook 1TB device and then the port multiplier device was unable to be seen by Windows. Repeated process several different ways, all ending up with failure of one drive or another. I installed this device in an attempt to take advantage of the speed provided by an Express Card. These devices all worked fine with a 4 port PCI-X card purchased from NewEgg.

Overall Review: Maybe it works well on a Mac.