a card slot on the left side thereof in practice the card slot may be formed on the right side if a pc card that is designed to be inserted into the left side of a notebook pc is inserted into the right side of the pc a relationship between the scan unit of the pc card and a finger will be reversed to solve this problem the present invention provides fingerprint identifying pc cards that can be used without regard to insertion directions fig2 shows a fingerprint identifying pc card according to the eleventh embodiment of the present invention the pc card has a card unit a having two receptacles a 11 and a 12 thereon the receptacles all and a 12 are point symmetrical the bottom of a scan unit 15 of the card unit a has an insert a 13 that is offset from the center of the bottom when the pc card is inserted into the left side of a pc the scan unit 15 is attached to the card unit a by engaging the insert a 13 with the receptacle all if the pc card is inserted into the right side of a pc the scan unit 15 is turned by 180 degrees into a scan unit 15 u2032 which is attached to the card unit a by engaging the insert a 13 u2032 with the receptacle a 12 alternatively the card unit a may have one receptacle or insert and the scan unit 15 may have two inserts or receptacles fig2 shows a fingerprint identifying pc card according to the twelfth embodiment of the.