Peripherals gurus Mayflash have produced a four-port GameCube controller adapter for release this month.
Spotted on Play-Asia this week (thanks, Andrew), the adapter allows players to hook up four GameCube controllers (or wireless Wavebird controllers) to Wii U or PC (via USB), with a dedicated switch between the two modes.
For the computer support, the adapter works with Windows XP, Vista, Windows 7,Windows 8,32 bit and 64 bit and Mac OS under the PC mode.
It's currently stocked for $19.99 (£13.25), available to pre-order.
Will you pick up a MayFlash GameCube adapter?