In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

Hi Guys;

I can also confirm that an exact backward plug-in of all four pins has not damaged my SX-Keys. This happens frequently now that my older debug/development boards use the old "right side up" orientation, and the more recent Pararallax standard uses the "wrong side up" orientation. As I frequently have multiple debug/development boards going at one time, and frequent re-programs, the movement of the SX-Key among these configurations now causes frquent reverse plug-in occurances.

But as long as the pins are not also skewed by one there appears to be no harm done. The one time I did reverse and skew them (which direction I can't recall) it was toast.

I'm not sure why Parallax has adopted this new orientation scheme.....

Cheers,

Peter (pjv)

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