Works as expected most of the time. Sometimes the writing speed is slower than expected, but that may be due to the card. I ran a speed test using a Black Magic Disk Speed Test App. Two cards tested: Sony M-Series 128GB UHS-II SDXC (R: 260MB/s, W: 100MB/s) and Lexar 64GB UHS-II SDXC (1000x/150MB/s) Sony: 80 reads/ Write 222, Lexar: read 63 / write 139 In addition, SD cards are easy to insert and remove and close securely enough.
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