Set spi speed to 2Mhz precise

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Isn’t baudrate or kbps (mark the lower case b) already based on bits rather than KB/s (kilo byte per second - mark the capital B)?
So wouldn’t you set the SPI speed to 250kHz?

And to rid you of the need to calculate prescalers and dividers you can use this overload of SPI.setClockSpeed()

SPI.setClockSpeed(250000);
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