1. A printing device comprising: at least one printing engine comprising customer replaceable units; at least one engine controller operatively connected to said printing engine, said engine controller using software to control operations of said printing engine; at least one non-volatile memory operatively connected to said engine controller, said non-volatile memory storing values used by said engine controller to control operations of said printing engine; and at least one adapter card operatively connected to said non-volatile memory and to said customer replaceable units, at least one of said customer replaceable units comprising a memory unit, said adapter card reading data from said memory unit within one of said customer replaceable units, said adapter card using said data to alter values within said non-volatile memory by bypassing said engine controller when communicating with said non-volatile memory, and said adapter card comprising: a physically separate device from said engine controller; a printed circuit board; at least one logic unit mounted on said printed circuit board; wiring within said printed circuit board connected to said logic unit; and connection terminals on said printed circuit board connected to said wiring, said connection terminals being operatively connected to said non-volatile memory.