Woohoo! So I bought this SD card reader (I’m sure many vendors using different names are selling the same product).
and this file set
and these are my results (so far).
Getting the cover off took a bit of force, but I got it off with my iFixit Jimmy tool.
Then, I started filing down the sides and front corners of the PCB so that it would fit in the expansion card bay.
I’m sure I’ll need to file the adapter more when I put it in a proper enclosure, but for now, this is the filed down PCB side-by-side with the PCB of a USB-A expansion card.
One thing that worries me is that this SD card PCB has no structural reinforcement on the USB-C plug’s solder points, unlike the Framework expansion cards.
Here is the adapter plugged into my laptop. It’s a very snug fit, but it is in there.
And here is how it looks in normal use.
I have already sent in an order for a 3D print of an expansion card enclosure to my school’s library, so as soon as I have that I will file down the PCB even more and glue it to that enclosure (like @maybeRui did).
ExpansionCard.stl (51.3 KB)
Overall, this was a very cool find on @Lee_Holbrook’s part, and I’m super happy with it!