Connectors to connect optional or daughter cards or boards to main or motherboards. One example provides a connector that is capable of supporting high-speed data rates by employing contacts that provide short signal paths and a ground plane to improve signal quality. The space consumed in electronic devices may be reduced by providing a connector having a low profile, while another example may provide a connector having mechanical stability. Another example provides a connector having an increased manufacturability. Other examples include wider contacts for increased current capabilities.