When a printer is connected to conventional office power, i.e.. 110 VAC service, it automatically operates in "slowdown-capable" mode. In such a "slowdown-capable" mode, as the printer works harder, it may slow down and reduce performance when there is not enough energy available from the input power source. When the same printer is connected to 220 Volt (or higher) service, it automatically senses this higher input power availability and allows the printer to draw more power from the input, always operating at its highest performance mode to complete the jobs as efficiently as possible. Thus, the printer operates at its highest performance level taking in to consideration the minimum amount of power available and amount of power necessary.