I bought several portable USB copiers to test for my team. We often need to duplicate disks on the fly. I was a bit wary as there were no reviews on the network. He turned out to be the best of them all. It's smaller than the 1:5 models we tested and at least 10% faster. We've now used it to duplicate dozens of batches of 128GB and 256GB USB 3.1 drives with no issues. Highly recommended.
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