A high speed electrical connector includes a plurality of substantially planar signal transmission bodies (SPSTB), an insulative housing that retains the plurality of SPSTBs, and a plurality of self-adjusting surface-mount attachment structures (SASMAS). Each SASMAS is confined in its own guide with respect to an associated SPSTB. During the connector-to-printed circuit board (PCB) attachment process, the connector is heated so that solder within the connector that holds the SASMAS structures in place melts. As the connector settles with respect to the PCB, the SASMAS structures slide in their respective guides varying amounts to accommodate non-planarity of the upper surface of the PCB. In one example, each SPSTB is a printed circuit that has a plurality of signal conductors. Each conductor terminates in planar sliding surface. A SASMAS is self-adjustably soldered to each such sliding surface.