I has 4 SanDisk Ultra Plus 3 128GB and one 256GB. 3 128GB work extremely well, no complaints, I am very satisfied. However the 256GB toasted, he began to make the system unstable, the "freeze" for periods of longer and longer and eventually not at all be detected by the BIOS after just 2 months of use, tested on many motherboards, even punishment. Forced to return collateral. It was not easy to return it because the service SanDisk contacts are difficult to access on their site, they can be incredibly technical issues to create the RMA (personally I'm okay the trade, I speak English, so any difficulties but for Mr Toutlemonde, must cling), then you must return your defective hardware costs by registered in the Czech Republic (yes they have not logistics center in France and Amazon takes nothing laden) . Then wait ten days they inspect the gear and you refer a new UPS from the US. I hope it was just a stroke of bad luck, it will not happen again, when I write these few lines of commentary, the new received only 9 days of use. Wait and see ...