A card connector having a housing with a receiving slot and connector pins are provided. An expansion card having docking well regions, contact pads, and backup contact pads is inserted in the receiving slot. The connector pins are connected to the docking well regions on the expansion card. The expansion card is coupled to a servomechanical device that can slide the expansion card to connect the connector pins with the contact pads. Connector pins and contact pads are coated with an interface material that is subject to wearing. Worn interface material can cause weak electrical connections between connector pins and contact pads. Thus, a card connector with a servomechanical device is provided to slide an expansion card within a receiving slot of the card connector for an improved electrical connection between connector pins and contact pads.