A fiber optic adapter assembly comprising: a housing defining an internal cavity being open through a first opening at a first exterior end and through a second opening at a first interior end opposite to the first exterior end; an adapter module floatingly disposed in the internal cavity of the housing and configured to align ferrules of fiber optic cable connectors (102, 104) inserted into the adapter module in opposite directions; wherein the adapter module comprises: a ferrule holder having a barrel portion extending along the longitudinal axis and configured to receive ferrules of a first fiber optic connector and a second fiber optic connector from opposite directions and align optical fibers of the first and second fiber optic connectors (102, 104) therein; and an adapter body configured to at least partially surround the ferrule holder and including a flange extending radially outwardly from the adapter body; wherein the adapter body is configured to be longitudinally slidable through the second opening of the housing characterized in that the fiber optic adapter assembly further comprises a single biasing member disposed in the internal cavity of the housing and concentrically aligned with the adapter module, the single biasing member configured to bias the adapter module in a direction toward the first exterior end and be compressible in a direction toward the first interior end and in that the flange is configured to engage an end of the single biasing member and the single biasing member is disposed in the internal cavity of the housing to surround the adapter body. a housing defining an internal cavity being open through a first opening at a first exterior end and through a second opening at a first interior end opposite to the first exterior end; an adapter module floatingly disposed in the internal cavity of the housing and configured to align ferrules of fiber optic cable connectors (102, 104) inserted into the adapter module in opposite directions; wherein the adapter module comprises: a ferrule holder having a barrel portion extending along the longitudinal axis and configured to receive ferrules of a first fiber optic connector and a second fiber optic connector from opposite directions and align optical fibers of the first and second fiber optic connectors (102, 104) therein; and an adapter body configured to at least partially surround the ferrule holder and including a flange extending radially outwardly from the adapter body; wherein the adapter body is configured to be longitudinally slidable through the second opening of the housing characterized in that the fiber optic adapter assembly further comprises a single biasing member disposed in the internal cavity of the housing and concentrically aligned with the adapter module, the single biasing member configured to bias the adapter module in a direction toward the first exterior end and be compressible in a direction toward the first interior end and in that the flange is configured to engage an end of the single biasing member and the single biasing member is disposed in the internal cavity of the housing to surround the adapter body. a ferrule holder having a barrel portion extending along the longitudinal axis and configured to receive ferrules of a first fiber optic connector and a second fiber optic connector from opposite directions and align optical fibers of the first and second fiber optic connectors (102, 104) therein; and an adapter body configured to at least partially surround the ferrule holder and including a flange extending radially outwardly from the adapter body; wherein the adapter body is configured to be longitudinally slidable through the second opening of the housing characterized in that the fiber optic adapter assembly further comprises a single biasing member disposed in the internal cavity of the housing and concentrically aligned with the adapter module, the single biasing member configured to bias the adapter module in a direction toward the first exterior end and be compressible in a direction toward the first interior end and in that the flange is configured to engage an end of the single biasing member and the single biasing member is disposed in the internal cavity of the housing to surround the adapter body.