does not support online functionality and will not work with any LAN adapter, even if plugged into the USB port. Wii Lan Adapter for sale - eBay

: Another popular third-party choice known for its performance and ease of use.

: Includes a 6-foot patch cable and supports high-speed USB 2.0 connections. Price : Used units are often found for ~$10 to ~$28. Intec LAN Adapter

: A highly rated third-party alternative often sold at Best Buy.

: This is the most reliable option, designed specifically for the Wii, Wii U, and even the Nintendo Switch.