Abstract: A storage system and a connector for use in the system. A shelf may be supported on a plurality of hangers or brackets, each of which has a horizontal shelf-supporting arm and a vertical arm. The hangers are connected to a plurality of upright posts, each of which posts defines at least one chevron-shaped or "Z"-shaped slot to receive a downwardly extending hook that is fixedly secured to the vertical arm of the hanger. Other shapes may be used for the hook-receiving slots, so long as one elongated arm of the slot slants upward and one downward, and the hook carried by the hanger slants downward in a direction 180.degree. to the direction in which the upward elongated slot slants upward, while the lower elongated slot slants downward in a direction other than 180.degree. to the direction the upper slot slants upward. An outwardly facing panel defining a plurality of hook-receiving two-armed slots, generally similar to a conventional peg board, may also be used.