A USB connector includes an electrically insulative housing having a first connection member holding a first terminal set and a second connection member holding a second terminal set, the first and second terminal set each include fixed terminals and springy terminals arranged in four rows, the rear bonding end pieces of the fixed terminals and the springy terminals being respectively bonded to eighteen through holes of a circuit board that are arranged in four rows in such a manner that the first row and the last row each include five through holes and the other two rows each include four through holes; the rear bonding end pieces of the fixed terminals of the second terminal set being disposed in front of the rear bonding end pieces of the springy terminals of the second terminal set.