Hi, I bought 10pcs of "64GB Sandisk Ultra microSDXC UHS-I Card with Adapter" from a seller on Ebay and it turns out to be fake. I tried running a test using this tool one of the cards and the test give me this result: The media is likely to be defective. 6.3 GByte OK (13233975 sectors) 56.1 GByte DATA LOST (117772489 sectors) Details:0 KByte overwritten (0 sectors) 0 KByte slightly changed (< 8 bit/sector, 0 sectors) 56.1 GByte corrupted (117772489 sectors) 0 KByte aliased memory (0 sectors) First error at offset: 0x0000000193de6e00 Expected: 0x0000000193de6e00 Found: 0xb484d7b4583f8688 H2testw version 1.3 Writing speed: 8.82 MByte/s Reading speed: 14.8 MByte/s H2testw v1.4 So it seems only 6.3GB is the reall capacity of the card so it is 100% fake. But it takes more than 2 hours to test 1 single 64GB microsd card using this tool. Can you suggest any tool that I can use and take a screenshot from to send to Ebay as a proof? I would like to know your suggestions, and If anyone has the similar experience please tell me what's the best proof that I can send to Ebay so I can get a full refund. Here's a brief story about what happen with me and the seller: So I file a return on the seller once I saw(upon seeing the packaging, It already gave me a faint hint that its fake since the printing is a little bit low quality. I plugged in the micro sd card on my computer and It was read properly, but when i check it's properties, format is already FAT32 which it shouldnt be. I do the test and all and then it even makes my doubt clear that its fake. So the seller told me to either they will send a partial refund and I can have the items or send the items to them to get the full refund. But according to Ebay's Money Back Guarantee, If the buyer is sure that the item is a counterfeit, the buyer is not obliged to send it back to the seller, they will just cooperate with Ebay for the proper disposal of the products. That's one thing, and also I cannot send it back to them if I want to since I live in the UAE and the only reason I get US products is by using Aramex's ShopandShip service. So sending it back to them will cost more than the product itself. I kept on trying to say this to the seller but I think the seller doesnt want to read my explanation and just want to know If I will return the items or not. So I file a complain on Ebay, which they return a reply and is now asking for a proof. Thanks for the help in advance.