I doubt it will have anything to do with the SD/MMC.
This might be helpful. I wrote and published this few days back.
Host and guest OS USB 3.0 and virtual xHCI support with Workstation 9
I doubt it will have anything to do with the SD/MMC.
This might be helpful. I wrote and published this few days back.
Host and guest OS USB 3.0 and virtual xHCI support with Workstation 9