An electrical contact pad for electrically contacting a connector includes a first region having a first length in a longitudinal direction, and a second region having a second length in the longitudinal direction that is greater than the first length. The first region is arranged to contact a first arm of the connector and the second region is arranged to contact a second arm of the connector. The first length being smaller than the second length results in a beneficial increases the impedance of the electrical contact pad. A chamfered edge of the contact pad results in an additional beneficial increase in the impedance of the electrical contact pad.