How to Identify a Fake Samsung Micro SD Memory Card : 8 Steps (with Pictures) - Instructables
Warning to anyone buying Samsung SD cards off of eBay. They are made in Korea, so always check the back of the card (real on the left, fake on the right) :
Memory Cards - Full Size & Micro SD Cards | Samsung US
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Samsung SD CARD EVO PLUS 32GB class10 - Secure Digital (MB-SC32K/EU)