Abstract: An interface card connector having a slotted seat and a locking mechanism having an end for connecting with the slotted seat. The locking mechanism is provided on the top thereof with a hook with an inclined surface, in order to guide an interface card downwardly for engaging into a āUā shaped notch provided on the lower portion of one side of the interface card, thereby the interface card is fixedly connected with the slotted seat; the locking mechanism is provided on the bottom thereof with an abutting portion extending upwardly to an angular direction, so that when the moving and holding portion of the locking mechanism is moved, the abutting portion pushes the interface card upwardly to release it from the slotted seat easily. The connector is suitable for use as an interface card connector to connect an electrically connecting interface card with a printed circuit board of a mainframe of a computer.