The fiber cassette rear cable manager organizes MTP™ interconnect cable and traditional fiber cable for SFQ series MTP™ fiber optic cassettes, HDQ series high density fiber optic cassettes and pre-terminated cable assemblies with cassettes. The cassette rear cable manager mounts to the rear of a standard EIA 19 in W telecommunications rack and provides a secure location to support a maximum of sixteen MTP™ interconnect cable assemblies. Interconnect cables and traditional fiber cables shall be secured with fiber management spools.