This device is a wireless controller adapter for Gamecube console, compatible with the best-selling Bluetooth controllers on the market. Features: 1) Only suitable for Gamecube console. 2) Up to 4 Bluetooth controllers can connected paired simultaneously. 3) Multi-function reset button, Support firmware updatable. 4) Almost zero latency, the PS4&PS5 controller less than 6ms of latency. 5) Compatible PS3/PS4/PS5, Xbox One S, Series X/S, Switch Pro, Switch Joycon, 8bitdo, Retro-Bit Wireless Controller, etc. Note: After the first controller is successfully connected, press and hold "BOOT" for three seconds to start the pairing of the new controller.