The Molex Modular Connectors - Accessories 1300580035 is a dust cap/cover designed for Daniel Woodhead Harsh Environment RJ45 Ethernet Receptacles. This dust cap/cover is made of a durable rubber body that is designed to protect the RJ45 Ethernet Receptacles from dust, dirt, and other debris. The rubber body is also designed to provide a secure fit and prevent accidental disconnection. The Molex Modular Connectors - Accessories 1300580035 is an ideal solution for harsh environment applications where dust and dirt can be a problem. It is easy to install and provides reliable protection for your RJ45 Ethernet Receptacles.