SD Interface

Memory Cards Compatibility
1

In my Application ill use an uSD Card.
my uC supports up to SDR104 interface.
the Level shifter in my application limits the interface to 55MHz clk, therefore i could work on SDR25 / DDR50 mode Max, and SDR104 is not possible.
My question is, in case ill use one of your sd cards (SDSDQAF3-008G-I for example), does it supports SDR25 mode for example? the performance mentioned at the DS is SDR104 only, does is means UP to SDR104?
Moreover, what about the performance of W/R max at this modes?