Amazon.com: Wii to HDMI Converter 1080P for Full HD Device, Wii HDMI Adapter with 3.5mm Audio Jack&HDMI Output Compatible with Nintendo Wii, Wii U, HDTV, Monitor-Supports Wii Display Modes 720P : Video
Using USB Storage with the Wii U - Guide | Nintendo Life
Wii-Mote Gets the USB Flash Drive Treatment
Amazon.com: May Flash NES/SNES Controller Adapter for NES Classic and Wii U/ Wii : Video Games
Nintendo Support: How to Copy or Move Data between Two External Storage Devices
How to play Wii ISO Games from start to finish with USB Loader GX (Links In description) : r/WiiHacks