I have recently bought a second hand TS 55 module.
This was intended for the model that has the designation without the “R”.
After some research I found that the differences lies in the riving knife (and the flanged bolt that belongs) The steel moulded piece that captures the handle is also different.
But these two items seems to be the only difference. I ordered these parts as spares and now I have a module that’s accepts both TS 55 saws.
As it happens it seems with some drilling and tapping you may also have the TS 75 module work with a TS 55 and TS 55R. The hole for the saw blade and riving knife is longer on the TS 75 module, as a result one of the capture plates are further back - this can be moved forward (drilling two holes) to fit length of TS 55(R) saws.
If your module says TS 55R and your saw says the same, you should have everything right.