Due to the high energy discharges it applies, the Magstim draws large amounts of power from the wall which can disrupt the equipment connected to the same wall outlet. With that in mind, the following suggestions (supplied by Magstim) have worked for other customers in the past.
1. Connect the wall power cables for the Magstim and PowerLab to separate wall outlets in the room.
2. If using a longer than normal USB cable, please look into a powered USB cable to improve connection.
For further technical assistance with this or any other issue, please contact ADInstruments Technical Support by clicking HERE.