Wii U can use two GameCube controller adapters
Bloopair: Connect Controllers from other Consoles natively | GBAtemp.net - The Independent Video Game Community
How to Synchronize a Wii Remote to the Console: 10 Steps
Nintendo Support: How to Sync a Wii Remote with a Wii U Console
How to Connect a Wii Remote: Simple Guide + Troubleshooting
Wii U Branded Remotes Feature External Sync Button | Nintendo Life
:no_upscale()/cdn.vox-cdn.com/uploads/chorus_image/image/52848981/631611032.0.jpg "Nintendo Switch is leaving these Wii U features behind - Polygon")
Nintendo Switch is leaving these Wii U features behind - Polygon
Adapter Promises to Connect PS3/4 Controllers to Wii/Wii U Remotes - News - Anime News Network
Amazon.com: Wii Remote Controller,Wireless Remote Gamepad Controller for Wii and Wii U,with Silicone Case and Wrist Strap(No Motion Plus),White & Black : Video Games
How to Connect a Wii Remote: Simple Guide + Troubleshooting
Amazon.com: Mayflash GameCube Controller Adapter for Wii & Wii U (Dual Pack), White : Video Games
Wii Remote - Wii U Wiki Guide - IGN
Nintendo Wii Remote Troubleshooting - iFixit
How to Sync a Wii Remote to a Wii or Wii U
Nintendo Support: How to Sync a Wii Remote with a Wii U Console
Wii U GamePad - Wikipedia
Wii U Pro Controller - Wikipedia
![Wii U's GameCube controller will support more than just Smash Bros. [updated] | VentureBeat](https://venturebeat.com/wp-content/uploads/2014/10/wii-u-gamecube-controller-adapter-setup.jpg?fit=400%2C296&strip=all "Wii U's GameCube controller will support more than just Smash Bros. [updated] | VentureBeat")
Wii U's GameCube controller will support more than just Smash Bros. [updated] | VentureBeat
Nintendo Support: How to Sync a Wii Remote with a Wii U Console from the HOME Menu
How to Sync a Wii Remote to a Wii or Wii U
How to Sync a Wii Remote to a Wii or Wii U
Wii U - How to Sync Your Wii Remote - YouTube
How to connect your Wii Remote to your Android phone | Pocket Gamer
Wii U Pro Controller Now Working With PC And Mac - My Nintendo News
GameCube Controller Adapter for Wii & Wii U (Dual Pack), White
