Assembly and system of datacommunication cables and connectors

An extension trunk cable-connector assembly comprising:

• a cable including a plurality of subunits, each of the subunits comprising a plurality of twisted pairs of conductors;
• a jack attached to one end of the cable;
• and
• a plug attached to an opposite end of the cable;
• wherein each of the jack and the plug includes a contact for each of the conductors of the cable.

A datacommunication connector unit, comprising:

• a housing;
• a printed wiring board mounted within the housing;
• a plurality of RJ-45 jacks mounted on the printed wiring board and accessible from one side of the housing;
• and
• a backplane connector mounted to the printed wiring board and electrically connected to the RJ-45 jacks, the backplane connector being accessible from a second side of the housing;
• in combination with a cable-connector assembly, comprising:
• a trunk cable comprising a plurality of subunits, each of the subunits comprising a plurality of twisted pairs of conductors and a shield circumferentially surrounding the plurality of twisted pairs;
• and
• a connector attached to each end of the cable, each of the connectors including a contact for each of the conductors of the cable, the connector of the cable-connector assembly being connected with the backplane connector of the connector unit.