[. . . ] [. . . ] Note: To sing a Duet in a game, plug both Microphones into both USB ports on the back of the Nintendo Wii. TROUBLESHOOTING: Problem: The SingSong Duet Microphones do not function. Make sure the Microphones are plugged properly and securely into the USB ports on the back of the Nintendo Wii. Make sure there aren't any broken parts or anything else that would hinder any connection (i. e. [. . . ] [. . . ]