Do you think this module might also support SD and uSD cards plugged into it via an SD-to-USB adapter?
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I found this board. It is at AliExpress. URL: https://www.aliexpress.com/item/Free-shipping-1PCS-IC-CH376-CH376S-Original-authentic-and-new/32541831306.html It has a CH376 with USB and SD Card interface. Cost is $13 with free shipping.
More recently I purchased a couple Arduino compatible 3.3v STM32 "blue pill" boards (~$1.70 ea.) with 20-KB RAM and a 72-MHz clock.
Just not enough time for everything on my "to do" list (grin).
But, at face value they seem to be perfect for storing Gigabytes of data, in a very cheap form factor.
In the end, I decided to stick to IDE, and write some drivers to integrate ChaN's FafFS solution. ChaN's code includes full LFN and Unicode support (he's Japanese) and exFAT, and he keeps it very well maintained.