My son's 3DS XL takes this particular card. I think the newer revision takes micro sd
well 60MB/s obviously isn't the peak speed as its just been tested above to be 68MB/s average speed remember a U3 card is only a card which has a U3 label on it if you rub off that U3 label its still the same card underneath, depends when it was tested etc random writes and reads were better with the sandisk but which application for an sd card specifies a required level for random read/writes?
I stand corrected. UHS-x is the interface speed and Ux is minimum write speed. (embarrassed) But I wouldn't go as far as saying that it is probably U3 speeds as the 60MB/s is probably the peak speed whereas U3 defines minimum speed of 30MB/s which it may not be capable of. @thekingbeyond's post shows that his U3 card is faster at non-sequential writes so if you have a mixture of sequential and non-sequential write (e.g. due to fragmentation) then you may need a U3 memory card to cope.
Mine came yesterday on the left is my SanDisk Extreme SDXC 90mb Class 10, U3, V30 64GB and on the right the Fuji, great price thanks @ajmr6891
uhs-i does not equal u1 uhs -'letter' is the interface and u'number' is a speed if the card is 95/60 as it says then there is a good chance its as fast as a u3 just hasn't been certified as that personally id go for a smaller card of known quality for around this price chances are if you are not really savvy enough to know about speeds then its unlikely you will need 128gb anyway but that will ofc depend on each case