a fanout connector assembly is provided for fiber optic cables each including a plurality of optical fibers . the assembly includes at least two fanout connectors each having a housing with a passage for receiving a fiber optic cable along an axis . a fanout member in the housing spreads the individual optical fibers of the cable transversely of the axis . complementary interengaging stacking members on the housings of the two connectors align and hold the connectors in stacked relationship with one connector on top of the other connector . an individual connector includes a base housing and a cover with complementary interengaging strain relief members and complementary interengaging latch members therebetween . the strain relief members and the latch members are respectively interengaged automatically in response to mounting the cover on the base housing , but the strain relief members are at least partially interengaged prior to interengagement of the latch members .