An interconnection system includes a first board group, a second board group orthogonal to the first board group, and a center backplane arranged between the first board group and the second board group. The first board group includes a number of first boards parallel to each other and the second board group includes a number of second boards parallel to each other. Right angle male connectors re arranged on each of the first boards and right angle female connectors are arranged on each of the second boards. The right angle male connectors and the right angle female connectors directly cooperate and are connected in one-to-one correspondence.