On that list, at least until today was Ethernet. No, despite the misleading title, the ESP does not have a MAC and/or PHY, but what it does have is an incredible 80 MHz DMA-able shift register ...

So he took it upon himself to modify some cheap Power Over Ethernet (PoE) hardware and create a single-cable solution (Google Translate). [Steve] bought a PoE module intended for security cameras ...