Board connectors having a low profile and which undergo a wiping effect when coupled

A pair of board-connection connectors which connect electronic circuit boards, said connectors comprising:

• a first board-connection connector including a first electronic circuit board and a first housing, said first housing including side wall portions and being mounted on a surface of said first electronic circuit board, said first board-connection connector further including a plurality of first contacts provided on a main surface of said first housing;
• and
• a second board-connection connector including a second electronic circuit board and a second housing, said second housing including side wall portions and being mounted on a surface of said second electronic circuit board, said second board-connection connector further including a plurality of second contacts provided on a main surface of said second housing and each of said plurality of second contacts corresponding to respective first contacts;
• wherein:
• said side wall portions extend from respective surfaces of said first and second electronic circuit boards in a direction substantially perpendicular to a main sliding direction in which said first and second housings are moved relative to one another when said first and second board-connection connectors are mated;
• on at least one of said side wall portions of said first housing of said first electronic circuit board, a first guide groove is provided which extends in a direction parallel with said sliding direction;
• and
• on at least one of said side wall portions of said second housing of said second electronic circuit board, and corresponding to said first guide groove of said first housing, a first insertion member is provided which is effective to be inserted into said first guide groove, whereby said first and second contacts contact each other when said first insertion member and said first guide groove are mated.