Abstract: An automatic insertion connector device, for instance for use in a test environment, particularly for connection to an RJ45 type connector. The connector has a contact portion having the general form of a connector part arranged to match the connector part it is intended to connect to, and is resiliently mounted by way of being carried on resilient material on a carrier means. The resilient mounting permits some deviation from the rest position in relation to the carrier and therefore enables account to be taken of deviation from the expected location of the parts under test.