I think that is the emitter board for the sandwich module, not Aleph LE.
Under Electronics-Converter >> Other PCBs, yo can find an item "McE2S Resistor PCB". Even though the title is not correct, it looks like this is the emitter board for Aleph LE since the description is "McGizmo's LED Board" and the picture is correct. I would suggest asking Wayne about this before ordering (by sending an email or posting a question at the Sandwich Shoppe forum).