Uploaded October 2023 | Updated September 2026, 1 week ago

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The ESP32-S3 can act as a USB Mass Storage Class device (USBMSC) - but how well does it work? Once again we're using my custom PCB from PCBWay.com/?from=atomic

It starts off pretty slow, but there's quite a few optimisations that we can make to get it quite a bit faster!

I'm using the USBMSC class to mount the SD Card connected to the ESP32 to my PC. It does work - but it's a bit slow - but we can make it faster!

The GitHub repo with my tests is here: github.com/atomic14/esp32-sdcard-msc

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