Pins beside the notch in the Mega board have no numbers or name. I mean the connector called digital. Are they connected somewhere. Where?
I need all of that row because it has a ground in one end. And there is no space for “double row connector”.
By the way, Mega documentation is not very clear. There are many connectors in the schematic, but where are they on board? Some kind of part placement diagram would help in pdf-format. I am not going to install any Eagle or Dodo-cad just for that.