A connector arrangement for making connections between printed circuit boards and connectors located on parallel side panels such as the side panels of a card cage of a computer central processing unit. The printed circuit boards are part of modules which include a retractable connector arrangement. The connectors are moved to a retracted position in which their width is less than the spacing between connectors on the side panels to facilitate their insertion between the side panels. Once in position, the modules are moved to an extended position and connections are made between the modules connectors and those on the side panels. The connectors provide low cost, high reliability, high density connections and facilitate close center-to-center spacings between adjacent modules.