5GbE USB A Ethernet Adapter NBASE-T NIC - USB and Thunderbolt Network Adapters | StarTech.com
Lenovo ThinkPad X1 Carbon Ethernet Adapter Dongle Fru# 04X6435 for sale online | eBay
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 RJ45/LAN, Lenovo X1 Carbon, HP EliteBook/ ZBook