Comment by dofm

I have this issue with cables between my Pi 4B and my slightly old 3D printer.

USB-A to micro-B cables, and the connection is tetchy beyond belief about which ones it will accept and which it won't, either with or without the theoretically-unnecessary-for-this-printer power wire blocker. I can see no rhyme or reason to it but now I have a cable that has a dot painted on it...