Abstract: An expansion cross-connect enclosure is disclosed. The expansion cross-connect enclosure includes a housing having a front, a rear, a top, a bottom, and left and right sides, the housing having a doorway at the front. The expansion cross-connect enclosure also includes a cross-connect panel detachably connected within the housing at the rear of the housing, and an access door covering the doorway, the access door pivotally connected across the front by a door hinge. The expansion cross-connect enclosure further includes cable access openings through the rear of the housing positioned to be aligned with horizontal cable access openings of an existing cross-connect enclosure.