Fake SD card or not?

hello :smiley_cat:

I purchased a SD Extreme Pro card from a store as it was cheap, then I wrote to them, was too late its been sent, but I found them on ebay with negative reviews due to fake SD cards? I dont want  to open the package and void the return, if I can return it (black backing with serial)

I purchased another , cost a bit more from a larger chain computer store, its the open packet, says UHS,1 though its U3 on the card, seems to be working well  (white backing with serial)


in order to ensure that you bought an original Sandisk card i would recommend contacting the support directly.

you can find the contact information here