A multiport assembly includes a shell defining a cavity positioned within the shell, a plurality of optical adapter assemblies, a modular adapter support array engaged with the plurality of optical adapter assemblies and positioned within the cavity, the modular adapter support array defining a plurality of adapter passageways extending through the modular adapter support array in a longitudinal direction, where each adapter passageway of the plurality of adapter passageways extends around at least a portion of a corresponding optical adapter assembly of the plurality of optical adapter assemblies, and a plurality of optical connector defining respective connector insertion paths extending inward from the plurality of optical connector ports to the cavity.