Nintendo Wi-Fi USB Connector - Wikipedia

System Requirements - PC, Windows XP, Nintendo DS, Wi-Fi compatible DS game, high-speed internet connection.

Nintendo DS Wi-Fi USB Connector

There oughta be a WiFi Game Boy cartridge.

Nintendo Switch / Platform - TV Tropes

Nintendo Wi-Fi Connection - Super Mario Wiki, the Mario encyclopedia

How to Connect Your Nintendo Wii to the Internet: 15 Steps

Nintendo Wi-Fi USB Connector

Wii Speak - Animal Crossing Wiki - Neoseeker

How to Connect Switch to TV Without Dock: Step-by-Step Guide

List of Nintendo DS accessories - Wikipedia