PowerBox PowerBus to PWM Adapter 9200PowerBox PowerBus to PWM Adapter 9200 The PowerBus to PWM Adapter is used for servos which are not fitted with a bus decoder. In this case the channel assignment is defined at the PowerBus to Bus Adapter. The bus signal is decoded in the adapter, which then generates conventional PWM signals for the servos. This unit allows all known makes of servo to be operated with the PowerBus system. As with the other adapters, all the outputs are protected