It looks like the original part is broken. I’ll post a corrected version in a bit.
Here is a fixed version (I improved breadboard a bit by adding connectors for the screw terminals.) In pcb you should check the foot print against the real board, the long side of the header connectors is 1.623 in (which isn’t on a .1 in boundary.) I assumed the board was like that, but it would be best to verify it before ordering boards and discovering it doesn’t fit. As well, I would be tempted to just use the max chip in core parts and the components rather than the module but either should work.
MAX485-Breakout.fzpz (12.0 KB)