Duplex profile connector assembly

A double-deck connector assembly comprising:

• an insulative housing defining upper and lower connection ports slightly offset from each other in a front-to-back direction thereof for therein respectively receiving upper and lower modules wherein both said upper module and said lower module are rotatively inserted thereinto;
• a pair of upper latch arms extending from two opposite ends of the upper connection port;
• a pair of lower latch arms extending from two opposite ends of the lower connection port;
• a first latching lug formed on each of said pair of upper latch arms, and including a first vertical section and a first horizontal section integrally connected to each other;
• a second latching lug formed on each of said pair of lower latch arms, and including a second vertical section and a second horizontal section integrally connected to each other;
• wherein said first latching lug and said second latching lug are positioned and configured to respectively retain the upper module and the lower module under a condition that the first vertical section is received within an upper notch of the upper module and the first horizontal section abuts against a side of an upper surface of the upper module adjacent to said upper notch, while the second vertical section is received within a lower notch of the lower module and the second horizontal section abuts against an upper surface of the lower module around a periphery of said lower notch:
• wherein said first latching lug and said second latching lug are positioned and configured to allow the lower module to be installed into the lower connection port from an initial insertion angular position above the first latching lug;
• wherein the first latching lug is configured to be adapted to temporarily engage the lower module when said lower module is in an intermediate position between the first latching lug and the second latching lug.