Connectors are specialized objects that are a cross between I/O flags and Components. Like components, they can have Attributes (including failure rates) and are assumed to be able to fail in diagnostic calculations. However, like I/O flags, they have no port-to-port dependencies. Every port represents a separate function of that connector.
When to Use Connectors
Connectors are most useful in describing test interfaces. They are recognized by tests in the same way that I/O flags are and can therefore provide test points at each port on the connector.