Quote:
Originally Posted by Daedalus
I use a plate in most of the conversions I do, but more for mechanical reasons. A plate lets you mount the module securely while still using the original PSU case screw pillars. These modules connect earth to ground internally (and usually have a significant conductor area dedicated to it), so it is intended, and doesn't need a wire (or plate) for electrical purposes.
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I should have mentioned it was also for securing the PSU
The PSU is grounded through the mount point M1 and the data sheet states that M1 is a safety ground and M2 should also be connected for better EMC performance. so, you're correct, its not actually required but no harm in doing so.