Extremely high density cable routing assemblies for data communication

A module for a high density fiber distribution chassis, the module comprising:

• a housing comprising a front face;
• a plurality of optical fiber connection elements exposed in the front face;
• and
• an element, comprising:
• a first portion affixed to the housing adjacent at least a subset of the optical fiber connection elements of the plurality of optical fiber connection elements;
• a flexure coupled to the first portion;
• and
• a distal portion, coupled to the flexure, having a maximum width wider than the flexure, wherein the flexure is configured to flex in a direction to move the distal portion alternatively towards the at least a subset of the plurality of optical fiber connection elements or away from the at least a subset of the plurality of optical fiber connection elements.

A high density fiber distribution chassis having a front, comprising:

• a plurality of modules, each module comprising fiber optic connection elements exposed at the front,
• wherein:
• the plurality of modules are disposed in a plurality of rows;
• and
• at least one of the plurality of rows is trayless such that the plurality of modules provide within the chassis a density of fiber optic connections of at least 148 LC connections per rack unit.