A stacked connector assembly (100) includes a pair of sub-connectors (1, 2), a numeral of contacts (3) received in the housing (10, 20) of the sub-connectors, a cable (4) terminated to the contacts, a cover (7) over-molded with the housing and the cable and defining a pair of receiving spaces (71, 72) therein, and a pair of latch arms (6) in a mirror-imaged arrangement. The latch arm includes a retaining portion (61) secured with the insulative housing of corresponding sub-connector, a supporting portion (64) engaged with the cover, a pressing portion (63) between the retaining portion and the supporting portion, and a pair of latch tabs (620) located close to the retaining portion.