DB15 Connector Female: This is the female version of the DB15 connector. It typically has 15 holes or sockets into which the male pins from another connector can be inserted.
RS232 Connector Male and Female Pair: RS232 is a standard for serial communication, and having both male and female connectors means you can establish a connection between two devices that support RS232 communication.
Cover Case: This is a protective covering or case that likely surrounds the connectors. It helps prevent damage, provides some level of insulation, and can contribute to the overall durability of the connector assembly.