I ordered Samsung brand RAM and received SK Hynix brand instead. Seller gave no notice of item substitution. All of the reported ratings (capacity, form factor, data rate, latency) seem to be the same as the Samsung unit and the current market value of the two seems similar, so I am going to keep it. But I cannot give a 5-star rating for this. I ordered Samsung brand part to match the dies of my other memory. I specifically chose this seller because they listed the part in stock. I am not pleased with this "bait and switch" tactic.