<p>An adapter housing for receiving a plurality of multi-fiber connectors includes a rectangular, box-like housing structure having opposing side walls and a back wall that to adapted to mount in a 2-U space in an equipment rack, wherein the housing structure has a width of no greater than about 17.75 inches and a height of no greater than about 3.50 inches. A bank of adapters is provided for receiving multi-fiber connectors. The bank of adapters includes individual connector-adapter-connector locations that together receive at least 200 multi-fiber connector pairs within the housing structure.</p>
