1. An apparatus comprising:an add-in card comprising a connector, wherein the connector comprises:
a set of signaling conductors corresponding to differential transmitter pairs and differential receiver pairs of an interface;
a set of ground conductors; and
a set of sideband conductors, wherein each of the sideband conductors in the set of sideband conductors comprises a respective alternating current (AC) match termination, wherein the AC match termination terminates to ground via a resistor in series with a capacitor.