Teensy 4.1 ethernet
I'm a fan of the Teensy [https://www.pjrc.com/teensy/] line of microcontrollers.
I have a whole pile of them for various projects. When I saw that 4.1 was
combining a 600MHz processor, 1MB ram, 8MB flash, and ethernet with
ieee1588/ptp, I was excited.
The ethernet connector