A guide connector includes a first movable body, a second movable body, a box-like body capable of accommodating the movable bodies, and a lid. The guide connector is positioned below a substrate. Contacts are inserted into a female connector after passing through contact insertion holes to of the guide connector and penetrating the substrate. After the electrical connection between the contacts and female contacts are respectively established, a slider is pressed down, which causes pressing pins and to press the first movable body and the second movable body. With this, a lower stage of the first movable body and a lower stage of the second movable body detach from restriction beams. This allows springs to extend, to move the first movable body and the second movable body away from the contacts.