I got this for my smartphone to replace the PNY SD Card I bought in 2011 that suddenly died. My PC has 4 Kingston RAM sticks older than that so I figured I'd go with Kingston. I recommend formatting it with the SD Card Formatter by SD Association, a program for Windows or Mac made specifically for memory cards, and not format using your PC's OS. After I formatted it with the SD Card Formatter I copied my music and other files to it, put the SD card in the smartphone, turned it on and it was recognized without a glitch, without the dreaded extSdCard needs to be formatted message that wipes out everything you copied to it.Another good thing, when I ordered this, I didn't realize it would be shipped from Taiwan. I didn't pay attention to the seller really, I was just looking for a new retail product with the best price with high reviews. Kingston is selling this for $17. I paid $11.25 with free shipping. I live in Florida and I assumed the seller was in the US. After placed the order on 1/17/16 the usual Amazon confirmation dialog popped up and it said the estimated arrival date would be 3/2/16! I said WTF! What did I get myself into? Not only am I'm going to have to wait a couple of months to get a damn little SD Card but what about if it's bad and I have to return it, It's going to be a nightmare, I don't speak Chinese! Unbelievably, I got it in 17 days from the other side of the world. You can trust doing business with this seller, NMicro Technology.