 Some power modules also contain a wireless transmitter.The benefits of having a separate power module is that it can minimize the number of cables connected to the accordion to one multipin MIDI, MIDI-style, or computer cable, which means the performer does not have a variety of cables (two to six) plugged into their instrument, which could be cumbersome and increase the risk of accidental disconnection.As well, a separate power module reduces the weight of the accordion.