LTR-48125S and LTR-48125W

That are the differences between these 2 drives? I have the S-drive but I usually see around references to the W-drive.

Thanks

They are supposed to have different flash-memory (S standing for SST and W for Winbond) but we have seen S-drives with Winbond chips and vice versa so it’s not a universal truth.

It makes no difference in the real world, only on paper.