The present disclosure includes apparatus and methods for a modular optical fiber cassette. One embodiment includes a base housing configured to receive additional nested components and an adapter plate resiliently connected to the housing and comprising a plurality of optical fiber connectors. The adapter plate is releasable from the housing and providing access to both sides of the adapter plate. The cassette further includes a radius limiter nested with and resiliently connected to the base housing, a first expansion housing having an exterior contour substantially aligned with the base housing and configured to resiliently interlock with the base housing, and a cover resiliently connected to the expansion housing.