Comment 12 for bug 1101883

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bowman (tereshkosg) wrote :

To shed more light on this ... it's one of the UHS-I cards (http://www.sandisk.com/products/memory-cards/sd/extreme-uhs-1-45mbs/) 32GB option.

Here is what I found about it:
Cards that comply with UHS show UHS-I or UHS-II on the label, and report this capability to the host device. Use of UHS requires that the host device command the card to drop from 3.3-volt to 1.8-volt operation and select the 4-bit transfer mode.