Receptacle assembly

A receptacle assembly comprising:

• a front housing having a mating end and a loading end, the mating end being configured for mating with a header assembly, the front housing having contact openings at the mating end, the front housing having pockets at the loading end separated by separating walls, the separating walls having slots therethrough open at rears of the separating walls, the front housing receiving a plurality of contact modules in corresponding pockets through the loading end;
• the contact modules each comprising a conductive holder having a first side wall and an opposite second side wall, the holder having a front coupled to the front housing, the holder holding a frame assembly between the first and second side walls, the frame assembly comprising a plurality of contacts arranged in pairs, the frame assembly having at least one dielectric frame supporting the contacts and being held in the holder, the holder providing electrical shielding around the pairs of contacts, the contacts having mating portions extending forward from the front of the holder for loading into corresponding contact openings of the front housing and for electrical termination to the header assembly;
• wherein the holders comprise embossments extending from the first side walls proximate to the fronts of the holders, the embossments loaded into corresponding slots through the rears of the separating walls to align the mating portions of the contacts with the corresponding contact openings during loading of the contact modules into the front housing.