Usually, devices have empty space inside that can be used to fit the fpx board. I then drill some holes to expose the port, mount the board inside with bolts an

Usually, devices have empty space inside that can be used to fit the fpx board. I then drill some holes to expose the port, mount the board inside with bolts and nuts and wire things up. Sometimes I need to 3D print an enclosure, sometimes I just shrink wrap it inline with the power cord for simplicity. See my sibling comments for when fpx board alone isn't enough.