Local storage is still a necessity (or a really nice-to-have) in this cloud-connected world.These cards (with and without the SD adapter) have been used in my mobile phones, DSLRs, computers (Lenovo Y500 and MS Surface Pro), tablets (Asus Transformer TF700, Nook HD+) and have been rock-solid.  I own 4 of them and in my DSLR they've proven to be fast enough for burst shooting and high-def video.In my mobile/tablet/PCs, they've been used to shuttle HD videos and other content back and forth without a hitch.Still love local storage and these cards are a relatively cheap and reliable way to achieve that.