Shaun Kanak
The SD slot on my laptop recognized this card immediately.  When I put it in my Droid Razr Maxx it recognized the proper amount but the phone required a reformat.Since install my phone has had some instability but I haven't had enough time to troubleshoot to determine whether or not it is due to the card.  Motorola says the phone can handle 32gig cards.  Some users have reported the 64gig works fine. Other users have reported problems with the 64gig card. Other than the phone instability the storage on the card seems to be working fine for now.