GameCube Controller Adapter for Wii U

Steam Input support

Yes, but the connected controllers shows up as Generic Controllers.

Linux Kernel Support

Yes, acts a normal USB-hub.

Udev rule

# Nintendo GameCube Controller / Adapter; USB
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="0337", MODE="0660", TAG+="uaccess"

How to connect?

In most cases you just need to connect it via USB and put the device in PC mode on the switch.

Sometimes the udev rule is missing and you will need to add it:

1. Open a terminal window
2. Type sudo echo 'SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="0337", MODE="0666"' | sudo tee -a /etc/udev/rules.d/51-gcadapter.rules > /dev/null
3. Type sudo udevadm control --reload-rules
4. Sometimes you will need to take out and reinsert the USB connector after you have reloaded the rules.

What is the Official RetroDECK - Steam Input Profile called?

• Generic Gamecube: RetroDECK: Generic GameCube

NOTE: That this will be released at a later date and work has not started on it yet.