HHKB Pro2 Rev. A1 / Rev. A2 difference.

[Geroximo]

Hi guys,
does anybody actually know what's the difference between Rev. A1 and Rev. A2 HHKB Pro2s?
I was thinking that Rev. A1 is the older model and Rev. A2 is the newer model, but today I have found an HHKB Pro2 Rev. A2 from 2012, so my theory doesn't make any sense anymore.


 

[Tactile]

I have a HHKB rev A2 from 2014-02 and a type S rev A1 from 2015-07. So, no, I have no idea what the revisions designate.

[Geroximo]

I'm amazed by the fact that nobody actually knows this.

[exdurisgloria]

I have a Rev. A2 from 2015-09.