Raspberry Pi Models and Features
DIY out-of-band management: remote console server (2022) - Michael Stapelberg
PoE Ethernet/USB HUB HAT for Raspberry Pi Zero, 1x RJ45 10M/100M Ethernet Port, 3x USB 2.0 Ports, 802.3af-Compliant, Power over Ethernet USB HUB HAT Expansion Board for Raspberry Pi Zero W
How to add wired Ethernet to Raspberry Pi Zero 2 W with Plugable's USB2-OTGE100 Ethernet adapter - Plugable Knowledge Base
How to Connect to a Raspberry Pi Directly with an Ethernet Cable
Bit-Banged Ethernet On The Raspberry Pi Pico
Raspberry Pi Zero W with SPI Ethernet modules - For Developers - OpenWrt Forum
This Raspberry Pi hub HAT provides more USB capability to your Pi, plus a RJ45 Ethernet port, which is great when you need a stable wired Ethernet
Ethernet/USB HUB HAT Expansion Board for Raspberry Pi 4 B/3 B+/3 B/2 B/Zero/Zero W /2 W/Zero WH/2WH, with 1 RJ45 10/100M Ethernet Port, 3 USB Ports
RouterPi - A Compute Module 4 Router
Raspberry Pi Zero USB/Ethernet Gadget Tutorial
The Smallest Raspberry Pi Boards
Turn a Raspberry Pi Zero into a full Raspberry Pi with Ethernet