If anyone wants to get into the low-level details of Ethernet, O'Reilly has a good book (a bit old now, so may not have the latest releases): * https://www.ore

If anyone wants to get into the low-level details of Ethernet, O'Reilly has a good book (a bit old now, so may not have the latest releases): * https://www.oreilly.com/library/view/ethernet-the-definitive/9781449362980/ https://www.oreilly.com/library/view/ethernet-the-definitive... A lot of interesting stuff going on with single-pair (two wires): * https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair#Single-pair https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair#Sin...