A card-type composite interface structure comprising at least an integrated circuit module and a carrier wherein said integrated circuit module comprises: a substrate , at least an electronic component , and a connector ; said substrate has a first surface and a second surface ; said electronic component is disposed at said first surface or said second surface ; said connector is provided with at least four metal contacts and electrically connected to said electronic component via a circuit on said substrate ; said metal contacts of said connector are electrically connected to a card reader when said carrier with said integrated circuit module mounted is inserted into said card reader by a user; wherein the thickness of said integrated circuit module is less or equal to 1 mm; characterized in that said carrier comprises a movable structure which is movably held in said carrier with at least a sliding member and comprises a supporting segment and a support pad , said supporting segment is next to said support pad and said supporting segment sustains said integrated circuit module , and said sliding member is installed on one lateral margin of the movable structure ; in the case of said movable structure being moved along a default direction (D) to depart from the carrier , under effect of the user's move by hand, said support pad is shifted out of said carrier ; the dimension of the support pad measured in the thickness direction of the structure after the support pad has been folded down matches the thickness of 4.5mm±0.1mm of the connection opening of a standard USB Series A port in a computer and said support pad supports said supporting segment , whereby digital data can be exchanged with the metal contacts of the composite connector when said movable structure is plugged into a standard USB Series A port on a computer . a substrate , at least an electronic component , and a connector ; said substrate has a first surface and a second surface ; said electronic component is disposed at said first surface or said second surface ; said connector is provided with at least four metal contacts and electrically connected to said electronic component via a circuit on said substrate ; said metal contacts of said connector are electrically connected to a card reader when said carrier with said integrated circuit module mounted is inserted into said card reader by a user; wherein the thickness of said integrated circuit module is less or equal to 1 mm; characterized in that said carrier comprises a movable structure which is movably held in said carrier with at least a sliding member and comprises a supporting segment and a support pad , said supporting segment is next to said support pad and said supporting segment sustains said integrated circuit module , and said sliding member is installed on one lateral margin of the movable structure ; in the case of said movable structure being moved along a default direction (D) to depart from the carrier , under effect of the user's move by hand, said support pad is shifted out of said carrier ; the dimension of the support pad measured in the thickness direction of the structure after the support pad has been folded down matches the thickness of 4.5mm±0.1mm of the connection opening of a standard USB Series A port in a computer and said support pad supports said supporting segment , whereby digital data can be exchanged with the metal contacts of the composite connector when said movable structure is plugged into a standard USB Series A port on a computer . <EOS>