Shit! It's slow! I wanted something that would allow me to exchange MP4 files between me and my buddy so we can analyze our bowling alley. It's the same speed as the old USB 2.0 I used. The copying speed is 8 to 20 Mbit/s. I've tried other files, no more than 20Mbps. So the advertised 200Mbps is rubbish. The speed I got was when connected to my USB 3.1 Gen 2 PCIE card. I got the same speed by connecting to my USB 3.1 Gen 1 port.
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