so my small dc transpent japenese/english keyboard is different than one of the full size english dc keyboards?
yup:
this is the Japanese Dreamcast keyboard (model HKT-7600) that is installed on the typing cab:
*notice the lack of a number pad, this is a "ten-keyless" layout
The small Japanese keyboards have a similar layout just more compact.
Some were Model HKT-7601 (Pink Hello Kitty) and some were HKT-4000 (the rest of them) I believe they're the same layout and design regardless.
AFAIK they came in
-solid-black
-white back, clear front
-clear pink (hello kitty)
-clear blue (hello kitty)
-clear blue (divers 2000)
-clear green
the USA has 3 different keyboard models...
the HKT-7620:
*notice it has a full number pad and a curved top edge
The SK-1502:
*notice it has a full number pad and a larger space-bar
both of the above were sold with the "Dreamcast" and with the "Sega Net" logo, the logo means nothing and was mostly dependent on what the keyboard was packed in with.
and the 3rd party Innovation brand keyboard:
(sorry no pic but the layout is the same as the official ones)
There was also a 3rd party adapter to use any PC keyboard.
there's also a PAL region keyboard HKT-7630 that is just like the HKT-7620 but with the UK special character layout:
There's a French HKT-7631, a German HKT-7632 and a Spanish HKT-7633
I believe there are other keyboards for other regions as well. I think there was a Russian one but I'm not 100% sure.