An electrical connector (1) comprises an insulative housing (10) defining a plurality of channels (14), a plurality of circuit boards (30) partially received in the channels, and a spacer (20) assembled with the circuit boards. The spacer includes a plurality of wafers (21) and defines a plurality of...http://www.google.de/patents/US6645009?utm_source=gb-gplus-sharePatent US6645009 - High density electrical connector with lead-in device