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,
Amazon.com: Zahara Adapter Dongle Cable 4X90F84315 SC10A39882BB Replacement for Lenovo Thinkpad X1 Carbon (2nd Gen 3rd Gen )/X1 Extreme (2nd Gen )/ X380 Yoga/ThinkPad Yoga 370 Ethernet RJ45 Extension 04X6435 : Electronics