Abstract: A plurality of contacts come into contact with plurality of respective contacts of an opposite connector so as to make an electrical connection. The plurality of contacts of the relevant electrical connector have an arrangement so that a first contact, comprising at least one contact among the plurality of contacts of the electrical connector, comes into contact with a corresponding contact among the plurality of contacts of the opposite connector, prior to the remaining contacts of the plurality of contacts coming into contact with the remaining contacts among the plurality of contacts of the opposite connector.