An electrical interconnection device (100) includes a first connector (1), a second connector (2) electrically connected to the first connector via a number of wires (26); a hinge member (3) including a first engaging portion (30) connected with a second engaging portion (32), said first engaging portion fixed to the first connector, the second engaging portion pivoted with the second connector; and a positioning member (305) unitarily formed with the hinge member, said positioning member selectively engaged with corresponding positioning grooves (202) of the second connector while the first connector and the second connector rotated with respect to one another.