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 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 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.