I'm aware of some early/super hobbyist microcomputers that came with ONLY a hex numpad (that is, no letters beyond F/no punctuation). I'm also aware of home microcomputers that had the usual decimal numpads.
But was there ever a microcomputer that came as standard with a full keyboard that included a numpad that also contained the hex digits? I know entering long strings of hex digits is a not uncommon activity on these early micros, at least for programmers, so it wouldn't surprise me if this was done.
(I seem to recall a memory in the back of my head of one that had this, but I could be completely imagining it — I thought it was the BBC Master but looking at photos it's clearly not!)