This is a mounting bracket for the Raspberry Pi Pico on the Gamecube.

Install it on the right side of the original fan and use the original screws.

My setuphttps://www.printables.com/model/118034-gamecube-40mm-screwless-fan-adapter

It takes about 10 minutes to print with a layer height of 0.2mm.

You can use longer screws. For size 4, the "long" screws are also suitable.

Note: When installing the wires to the Pico, you need to use the GND point at the top, not the GND point at the bottom as indicated in the manual.