Abstract: A lever type electrical connector assembly includes a first connector having an actuating lever pivotally movably mounted thereon. The actuating lever includes a first cam groove formed therein. A slide member is linearly movably mounted on the first connector and includes a second cam groove formed therein. The slide member has a first cam follower projection engaged in the first cam groove of the actuating lever, whereby pivotal movement of the actuating lever relative to the first connector effects linear movement of the slide member relative to the first connector. A second connector has a second cam follower projection to be engaged in the second cam groove of the slide member, whereby the connectors are mated and unmated in response to rotation of the actuating lever and resulting translation of the slide member.