A system and method for configuring expansion bus links to generate a double-bandwidth link slot are disclosed. The coil electrode section is sandwiched by the first magnetic layer and the second magnetic layer from both directions substantially perpendicular to the plane. A plurality of charge signals detected by the charge coupled device is sequentially output to the pixel processor according to the driving sequence. The apparatus employs centrifugal force to urge portions of the plant material into engagement with the drum’s cylindrical side and the openings therethrough so as to allow bring the brush rollers to mechanically shred and destem the plant material.