I used 1 out of 5 memory cards once to transfer some files from an offline computer and it worked fine. The USB connector slides in and out to protect it and it secures the connection, but in order to insert the memory card I had to hold down a slide lever to prevent the connector from sliding back into the memory card case and the USB drive the computer plugs into it. Considering the price I would buy the product again if they all perform well over time.
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