MANAGED FIBER CONNECTIVITY SYSTEMS

An adapter block assembly includes at least one adapter block; a circuit board; a first contact set; and a second contact set. The contact sets are disposed at apertures defined in the adapter block and rotated 180° from each other. Each adapter block includes first and second latching arrangements that retain separately manufactured alignment arrangements against movement along the passages. The first latching arrangements include latching arms disposed at the apertures. The second latching arms include ramps and stops disposed opposite the apertures. Optical connectors suitable for plugging into the adapter block include an outer housing having an area of increased thickness of hold a storage device and an inner housing with a channel to accommodate the area of increased thickness of the outer housing.