US Patent 11837811 Plug connector, receptacle connector, and electric connector

A plug connector mounted on a board and that mates with a receptacle connector includes at least three signal contacts and two power contacts each including a contact portion that contacts the receptacle connector and a block that holds the signal contacts and the power contacts. The block includes a body and a fitting portion that protrudes away from the body and is inserted into a fitting port of the receptacle connector, and the signal contacts and the power contacts are disposed alternately in a row along an arrangement direction and symmetrically about a line that passes through a center position of the plug connector and is orthogonal to the arrangement direction when viewed from a fitting direction to the receptacle connector.