I’ve noticed that it’s not reliable to run both
a) an external SSD (Samsung EVO 860) via a USB adapter
b) an onboard Sierra Wireless MC7455 mPCIe LTE modem
at the same time, even if you feed 12V/20W into the Fin.
For the time I solved this by feeding additional 5V power into the SSD, but that’s a bit inconvenient.
So, this on my wishlist for future iterations: Use something that can feed more power into USB-attached devices.
Also on my wishlist: Document how much power can be used by USB devices (alone and together, etc), based on how much power is fed to the Fin.