Or just plug in a USB card reader? There you go, job done !The idea is to build a modern SD and CF card adapter for the iMac, that way, you can use SD cards and CompactFlash and transfer files between the modern web and the old mac. I think that would be useful.
If you actually want an easy way of transferring files to an iMac, just network it. That's way easier than faffing with SD/CF cards.
Just because the Mezannine slot is there, it doesn't have to be used.
The other big problem with this is that the Mezannine slot was not officially supported by Apple - it was for connecting a logic analyzer to quickly diagnose board problems. It was never intended for upgrade cards.
More info here including info from a former Apple employee: https://www.applefritter.com/node/2302
If anything, it might be interesting to experiment with the Mezannine slot a bit, but to avoid dissapointment, I certainly wouldn't plan to do anything serious with it.
@Angelgreat Do you have an iMac with a mezannine slot to experiment with?
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