A card (1) to be mechanically connected with a socket (21,22,23,24,25) of an interface bus of a type selectable from among a plurality of bus widths. The card (1) includes an electrical connection portion (150) to be electrically connected with the socket of the interface bus, and a connection reinforcing portion (170) to reinforce a mechanical connection with the socket of the interface bus, wherein the connection reinforcing portion (170) is at least partially removable.