Dolphin supports Portal of Power since revision 3.5-2143 (wii-network + wii-usb merge). You just need to use zadig to override default Windows driver with libusb and then you're done, just load the game in Dolphin and plug Portal of Power into your computer.
No Portal of Power = no way to play, Dolphin doesn't emulate it and it's very unlikely that it'll some day
No Portal of Power = no way to play, Dolphin doesn't emulate it and it's very unlikely that it'll some day
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)