My device failed after about 50 days. I contacted the seller and he quickly sent a replacement. The reader is compact and fast, which is why I bought it. I use it with a USB 3.1 Gen 2 port and get around 45MB/s when copying 25MB RAW photo files from the card. These are ScanDisk Extreme Pro UHS-I cards, not UHS-II cards. I don't have USH-II cards, but I bought these to make it even faster for future upgrades.
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