2.5GbE USB A Ethernet Adapter NBASE-T - USB and Thunderbolt Network Adapters | Belgium
Buy StarTech.com 2.5GbE USB A to Ethernet Adapter - NBASE-T NIC - USB 3.0 Type A 2.5 GbE 1 GbE Multi Speed Gigabit Network - USB 3.1 Laptop to RJ45LAN - Lenovo
The working X1 Extreme ethernet adapter finally there! : r/thinkpad