Using Dolphin's Native Support (Requires an actual Nintendo Switch adapter OR a 3rd adapter with a toggle on it)
If you have the official Nintendo Wii U adapter or the 4 port Mayflash adapter, then you can utilize Dolphin's native support for these adapters (Direct Connect). The Direct Connect feature has 0 input lag and is 100% accurate to a console. Always use this if you can. While using Direct Connect, Dolphin configure the controller to match console automatically. This being said, you should not use the GC Pad Settings and changing the settings there will not affect your controller while Direct Connect is on.
*Uninstall the vJoy driver if you have it installed. Only applies if you have installed vJoy in the past.
- Dolphin emulator has native support for GameCube Controller Adapter which means that once it's setup all you need to do is have it plugged in, and Dolphin will auto-detect the adapter. Zadig is a Windows application that installs generic USB drivers.
- Exlene Wireless Gamecube Controller Switch. It connects to your Switch and PC via Bluetooth or with a USB cable. It has motion controls, rumble, and a 'turbo' mode. It comes with a rechargeable battery and a USB cable to charge it. The battery lasts around 10 hours. Has to be connected with the USB cable the first time.
*If using the Mayflash adapter, set it to Wii U mode. Do not try to use PC Mode.
1. Download and open Zadig.
2. Open the options menu and click 'List All Devices'.
I'm currently using Dolphin 4.02 x64. I was also playing around with other recent dev. Versions, but right now I want to stick with stable 4.02. I have the official WiiU adapter and have been playing Melee and the 20XX pack with my GameCube controller. Before I went to sleep, I tried to play a little more and my GC controller. So I post this because I want to play on Super Smash Bros on PC using emulator but I can't connect my gamecube controller: I have a gamecube to USB adapter so I plug it in and Windows say that the driver installation failed (which is normal if I have well understood). So I installed Zadig (Vista or laters versions, I am on Windows 7) and list.
3. Select WUP-028 in the pulldown menu, and ensure the USB ID is 057E 0337. If you do not see this then try plugging the adapter (specifically the black USB cord) into a different USB port.
4.Select WinUSB on the right column then click Replace Driver and select Yes to modify the system driver.
5. Open Dolphin > Controllers. For Port 1, in the dropdown menu, select GameCube Adapter For Wii U and to verify that it works, click configure and make sure Direct Connect is selected and the adapter is detected:
Using Dolphin Gc Controller Drivers
(Quick Note: If you want rumble on and are using the Mayflash 4 port adapter, then you have to plug in BOTH USBs. The Official WiiU only needs one to activate rumble)
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6. YOU CANNOT CONFIGURE DIRECT CONNECT LIKE OTHER ADAPTERS.
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The inputs will work as intended. Just start the game emulation to test.
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7. If you're adapter is NOT being detected, make sure you close all other instances of dolphin and restart 5.0-321.
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**For other OS's, follow these respective guides ( Mac / Linux ).