A connector has an insulating housing of which two opposite ends extended frontward to form a pair of supporting arms, terminals mounted in the insulating housing having soldering portions projected out of a bottom of the insulating housing, and a positioning member. The positioning member has a base slice. A rear of a side edge the base slice is extended downward to form a holding slice movably received in a through slot recessed at the supporting arm. A front of the side edge of the base slice is extended downward and then bent perpendicularly to form a soldering slice. As the height between the base slice and the soldering slice is bigger than that of the supporting arm, the positioning member is capable of moving up-and-down to adjust the relative position between the soldering slice and the soldering portions of the terminals.