A communications interconnection system includes: a communications rack having a pair of upright members; a patch panel mounted to the upright members, the patch panel having mounting locations for telecommunications connectors; and a cable management system mounted to the rack. The cable management system comprises a cable mounting member having a cable securing portion and a pair of arms attached to the cable securing portion, the arms being substantially parallel to each other and slidably mounted relative to the panel to enable adjustment of the distance between the cable securing portion and the communications rack. This configuration can enable the cable management system to be used with communications racks of different sizes and designs.