Solid-state drive, not the kind with a motor and discs (the old kind). SSDs use much less power - like a thumb drive.
@ScottSoCal sure, USB flash drives or SSDs would work as well (and would probably make more sense), but HDDs, or like in this case, a 3.5" USB floppy drive with floppy is more fun π
That was a floppy drive? I didn't see that in the video.
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@ScottSoCal what do you mean?