Connector assembly

A connector assembly comprising:

• a plug connector comprising:
• a photoelectric conversion element configured to convert optical signals to electrical signals, and electrical signals to optical signals;
• and
• an actuation device configured to drive said photoelectric conversion element;
• and
• a receptacle connector mated with said plug connector, wherein the plug connector and the receptacle connector are electrically connected through mutual contact between terminals located on three sides of the plug connector and three sides of the receptacle connector;
• wherein in the plug connector:
• a front-end side of a fiber optic cable configured to facilitate optical signal transmission is connected to a rear end side of said plug connector and extends from the rear end side;
• and
• lateral terminals are arranged in each of a pair of lateral edge portions that extend in a forward-backward direction, while end terminals are arranged in a front-end edge portion that extends perpendicular to the forward-backward direction, and
• wherein the end terminals of the plug connector are configured to carry a different type of electrical signal from an electrical signal that the terminals of the receptacle connector, which mate with the lateral terminals of the plug connector, carry.