The read speed through the card reader included is not 300 MB / s per second, but 30 MB / s per second via usb 2.0. The write speed is also less than 10 times. The reading speed through the built-in card reader of the computer is 73 MB / s per second . I probably got a marriage., Or maybe just misleading consumers, since the box and the site do not indicate that there will be such a low speed when used in USB 2.0 . and built-in card readers. Photos of measurements are attached.
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