A better GCN controller? Hori Battle Pad for Wii U - Review! | Smashboards
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Pro Controller U - Now that I've learned that it can't actually be used as a Wii U Pro Controller. And the package seems to make it quite clear that it can.
Nintendo Wii/Wii U/ Switch Pro Controller Comparison - YouTube
The SNES Classic & Wii Classic Pro controllers both work on Mario Maker 2 using the 8BitDo Gbros Adapter, both have ideal dpads and feel right at home : r/NintendoSwitch
Nintendo Classic Pro (2112266) Gamepad for sale online | eBay
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Wii Classic Controller Pro Review/Comparison | Eccentric but Lazy Ramblings of an Intrepid Webonaut
Wii Classic Controller Pro GET – ガンプラ命
Review: Pro Controller U – Destructoid
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Amazon.com: Wii Classic Controller Pro - Black - Nintendo Wii Standard Edition : Video Games