This 9 POS Covered Screen Cap with Lanyard is designed specifically for D Sub female connectors with copper alloy/tin plated shells. It provides a protective cover for the connector, helping to prevent dust and debris from entering and causing damage. The lanyard allows for easy attachment and removal of the cap, ensuring convenient access to the connector when needed. This high-quality product from AMERICAN CONEC is a reliable solution for safeguarding your D Sub female connectors.