A compression connector for mounting to a print circuit board includes an insulative housing and a plurality of terminals received in the housing. The housing includes a first mating surface and a second mating surface opposite to the first mating surface. A number of terminal passageways are disposed between and running through the first and second mating faces. Each terminal includes a retaining section. Each of terminal passageway defines a retaining slot along a height direction orienting from the first mating surface to the second mating surface to receive the retaining section of the terminal and two limited portions at two ends of the retaining slot in the height direction so as to allow the retaining section to move in the height direction without dropping out.