Plugable 2.5G USB-C and USB to Ethernet Adapter – Plugable Technologies
Amazon.com: UCTRONICS USB-C PoE Splitter Gigabit, PoE to USB-C 5V/4A Power Supply for Raspberry Pi 4 and More, 802.3at Power Over Ethernet to USB Type-C Adapter : Electronics
Black Box Desktop Ethernet Switch - Cableorganizer.com