## On the Meta - actually-realized data rates are often smaller in practice than according to underlying specs, - see even i.e. transfer of some tens-of-megabytes onto an SD card (copying a gcode file) - we observe only ~ 20mb/sec of advertized 80mb/sec or so - otherwise, you have notes on what-the-point is in your `scratch` - and consider linking to the ring-test page - and discuss that at the embedded limit, we often run into interrupt-request-handling-time troubles before anything else...