This prototyping board has a 0.1in grid of plated-through holes which can be used to add components onto either side to create custom circuits.
The ProtoBoard-1 can be connected to other Feather boards via the supplied pin or socket headers.
Headers are supplied unsoldered. Fit the appropriate pin- or socket-headers onto the correct side of the PCB so that the ProtoBoard-1 mates correctly with your Feather-S3 Pro DevKit.