Cable assembly for a connector system

A cable assembly comprising:

• a first header connector comprising a housing holding a plurality of contact modules, each contact module having a plurality of contacts arranged in a row and a dielectric body supporting the contacts, the contact modules being separate from the housing and loaded into the housing and arranged in a stacked configuration with the contact modules being parallel to one another, the housing of the first header connector having a first mating interface;
• a second header connector comprising a housing holding a plurality of contact modules, each contact module having a plurality of contacts arranged in a row and a dielectric body supporting the contacts, the contact modules being separate from the housing and loaded into the housing and arranged in a stacked configuration with the contact modules being parallel to one another, the housing of the second header connector having a second mating interface facing in an opposite direction from the first mating interface, wherein the first and second header connectors are identical to one another;
• and
• a cable bundle having a plurality of cables extending between the contact modules of the first and second header connectors, the cables being connected between the contacts of the first header connector and corresponding contacts of the second header connector.