I bought this flash drive 1.5 years ago, I was very pleased with the speed of storage and reading. They fully corresponded to the declared. Over time, I decided to buy another one of the same, but was disappointed that the speed differs from the previous one by 3-4 times for the worse. The flash utility showed that the controller and memory type of these flash drives are completely different, although the model and appearance are identical. Hence the conclusion: some buyers are happy, while others are indignant. By the way, I have a black-and-blue high-speed one, but not a yellow-black one. Maybe that matters too.
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