A cable boot is mounted to a telecommunications module housing an optical component, wherein the cable boot extends outwardly from the module. The cable boot is mounted by axially passing the cable boot over a plurality of cables carrying fiber optic signals leading to the optical component, axially passing a portion of the cable boot through a cutout defined on a main housing of the telecommunications module, placing a boot retainer over the boot in a direction transverse to the axial direction to capture the flexible boot against movement both in the axial direction and the transverse direction, and mounting a cover on the main housing to capture the boot retainer against the main housing.