Aspects of the present invention relate to systems and methods for customizing microwave energy distribution within a chamber to accommodate various load characteristics. In one aspect, a method for eliminating diode reverse recovery time is presented herein. In a retaining wall, a flexible geosynthetic material fits into a channel of a channel connector, and is held in place by an elongate bar. The dedicated combinations of the device driver and the device object are replaced by a generic device driver and generic device agent capable of exchanging data between the circuit control module and any one of the plurality of device types. The expansion unit is coupled to an external memory and able to expand the memory of the key administration module.