Hello! Does anyone know where or what type of card that the main firmware and resident firmware are stored in an LC module?

It's on the main board, but not on any type of card. We usually don't share any technical details.

Great!  That's all I needed.  Thank you!

That is true for modules with A, B and C firmware. With the so called Fusion platform (D firmware), we have a piggy-back board (=the Fusion board) on top of the main board.

Hello Norman:

it's stored either on the main board or on the fusion board depending on the electronics architecture of the module itself 

I have to disagree. The statement "On Infinity II LC modules the firmware is stored on the fusion board" is true for most Infinity II modules, such as detectors etc., however, for example the Infinity II 1290 pumps, like G7104A, G7120A etc. have a so-called Nucleus mainboard and use "B" firmware, instead of "D" for the Fusion-based modules.

In a nutshell: The type of FW depends on the electronics platform, not on the series.

I agree with you .. I just wrote it as an implicit meaning for infinty II which most of them are Fusion based , but for all other old modules no fusion board is exist ..