I've been using the card reader on Windows 8 x64, unfortunately, the problems that the readers from time to time deactivated (USB 3.0 remains active). The manufacturer has been reported as the chip used by Realtek to Genesys Logic changed - the problems remain the same, but there is for this chip to my knowledge, no firmware update.
I would recommend this unit at least on Windows 8 x64 therefore not recommended because such a problem for me is unacceptable. For just as it is so often, especially when you want to use the part, there's more, a reboot may / then you want to not always do.
