Advanced Mezzanine Cards are printed circuit boards (PCBs) that follow a specification of the PCI Industrial Computers Manufacturers Group (PICMG). PICMG AMC connectors may be used in such a specification. There are problems, however, with the card slots of the connectors when pressing the connectors onto the PCB's. For example, the openings of the card slots may deform or dirt and debris may enter the card opening.