Uno Backing Plate Hole Positions?

Official Hardware UNO Family UNO R4 Minima
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I've been working on a project using the Arduino Uno R4 Minima. The Minima (and as far as I can tell, all modern Unos) comes with a plastic/acrylic backing plate with 8 mounting holes, 4 of which line up with the holes in the board (these are the crossed out holes).

The other 4 holes (the ones I've circled) have no documentation about their positions. I've checked the docs, the datasheet, and even asked on the official discord, and the only info I was able to find was an issue on the github page for the docs asking the same question from ~5 years ago that was closed without an answer. Does anyone know where I could find this information?

arduinoholes
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I don't have the plastic cover. Could it be that it is just meant to be used to screw the cover to e.g. a piece of wood? In which case the location does not really matter (in my opinion).

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You must be able to make your own drawing, since you have the plastic plate? There is likely no documentation because the hole location may vary depend on the actual source of the plastic plate.

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