HHKB (pd-kb02) vs. hhkb lite (original) in the switch

[bkw]

Sorry, if this question has been answered before.  I've tried searching for an explanation about this but can't find anything.  I know that the original HHKB (1990s, before the release of the Professional line) had Fujitsu switches.  Then in 1999 PFU released the first Happy Hacking Keyboard Lite.  Both of these boards are rubber dome.

My question is this:

Was there any difference in the type of rubber dome switch used by these two boards?  Are they both identical Fujitsu switches?

Thanks,
Bryan

[hasu]

Lite is not Fujitsu definitely but I can't remember manufacturer of it. Maybe chicony.

[bkw]

Thanks!