I was going through my shed and assorted old A500 consoles caught my attention, so I decided it was time to finally get one of them set back up (especially since I found my A590 unit, which I thought had been sold off a few years back during the "dark times".)

So anyway, I've been keeping busy testing consoles to determine which one will be "the one". And something that caught my notice was the different types of cards found under the "trap door".

Specifically, there are 3 different styles:



The one in the metal case is the most common.

The green one is from Supra (A500 RAM/Clock) and the yellow one has no identifying markings at all.



Are these 3 all functionally identical, or is there one that is superior in some way to the others?
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