I bought several and they worked well for me but just the 4gb for all has a factory fault, on top of that I must return the product so that they can evaluate it and send me a replacement, can you imagine how long I should wait between the return and the new shipment. On top of that, sending from my country there is a lot of paperwork and queues. I prefer to lose money and buy from another place, at least they would have given me a discount, I could have bought another one from here, in the image if you see the capacity of the ram is not shown correctly.
Buy several types, memory works well better than I thought even