An electrical connector assembly having a first electrical connector or header including a base and a shroud extending therefrom. The shroud defines a first opening arranged opposite the base and a second lateral opening defined between two ends thereof. A second or mating connector of the assembly includes a mating end received within the first opening of the shroud in an insertion direction. A body of the second electrical connector is received within the second lateral opening of the shroud and includes a pair of covers or hoods with channels for receiving and mechanically joining the two ends of the shroud.