Connection-converting device for an expansion card in a portable electronic product

An electrically interconnecting system, comprising:

• a circuit board having a P number of contact pads thereon;
• a card socket mounted on the circuit board, said socket having an N number of pins;
• a connection-converting device having an N number of receptacle terminals electrically engaging with the pins of the card socket, a P number of external contact terminals electrically engaging with the contact pads of the circuit board and an M number of signal pins electrically connecting with the receptacle terminals and the external contact terminals, respectively, wherein the M number is equal to a sum of the P number and N number;
• and
• an expansion card having an M number of signal terminals electrically engaging with the signal pins of the connection-converting device.

A connecting device for electrically connecting an electronic card having an M number of positions to an electronic product, comprising:

• a printed circuit board having a number of contact pads thereon;
• an electrical connector mounted on the printed circuit board and having an N number of terminals, wherein N is smaller than M;
• and
• a connection-converting device adapted for electrically connecting with the electronic card, having a number of first contacts electrically connecting with the terminals of the electrical connector and a number of second contacts electrically connecting with the contact pads of the printed circuit board.