On Feb 24, 2018, at 18:57, Ian wrote: > > Glen, thanks for the response. > > The keyboard I’m looking for which I need for the 2/120 looks like this: > https://www.flickr.com/photos/alanc/4013376694/in/photostream
That is a Sun Type 2 keyboard. > Part #: 540-1006-01 > > It terminates with a registered jack and not a d-sub. > > Perhaps maybe some late mode Sun2s used the one you pointed at... I have one > for the Sun3. I’m not sure. > > I also know the mouse for the Sun2/120 looks like the one for the 3, but is > in black and again terminated with a registered jack that connects to the CPU > directly, and not via the keyboard as on the keyboard you posted. The Sun 2/120 had the two RJ connectors for keyboard and mouse and the Type 2 Keyboard and Type 2 Mouse (which you correctly describe) fit them. I am thinking that there was a passive adapter box that went between the 15-pin D connector on later Suns and the two RJ connectors. Maybe for the Sun 2/50. It also allowed one to use the Type 2 keyboard and mouse on the Sun 3/60 (and probably other models too). Type 2 and Type 3 are electrically the same, the big differences are the connectors and that the Type 3 keyboard is where the mouse signals are split out. > I’m sure somewhere, some rotten keyboard collector is using the keyboard I > need with their Dell PC because the keys click with some vaguely unique > hysteresis curve or something… I remember preferring the Type 2 keyboard to the Type 3 keyboard, and for a while using a Type 2 keyboard and mouse with a Sun 3/60 through one of the passive adaptor boxes. I do not recall why I preferred the Type 2 keyboard. And the keyboard collectors want "decent mechanical switches". <https://geekhack.org/index.php?topic=12506.0> And look at this page, and the 12th picture, for another Type 2 keyboard: <http://www.9999hp.net/botnet/> I have to wonder whether that is a sort of thing the keyboard collectors get up to. -Frank McConnell