Thanks all, good feedback.
I only was wondering because I have a plain vanilla Arduino Nano (version 3.3 it says, but not 3.3v) which I cannot get to program, either with my Raspberry Pi 400 or my Windows laptop, both using the earlier-than-version-2 IDE. (1.8.19?) More on that issue is on this forum under the subject line Cannot program Nano v3.3 from Windows 11 system. And I have a little project for Arduino Days 2026 (11 days from now) that could use a dozen of those GPIO pins at the same time. I suppose as a backup, I can use a proto breadboard, wires, and header pins to get to my home-brew breakout boards.