In a connector, first, second, third and fourth terminals are disposed to satisfy conditions (A) and (B): (A) (a1) a left-end of the first terminal is positioned to left of a left-end of the fourth terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in a left-right direction is shorter than a first distance, or (a2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, (B) (b1) a right-end of the second terminal is positioned to left of a right-end of the third terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than a second distance, or (b2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction.