# Fast Ethernet Connectors

Each FE port adapter has two 100BaseT connectors:

A Media Independent Interface (MII) connector

Either an RJ-45 twisted pair connector (on the PA-FE-TX) or an SC fiber connector (on the PA-FE-FX)

The 100BaseT interfaces on the FEIP are mounted on port adapters that attach to the FEIP motherboard.

Only one connector can be used per interface. The status of the connectors is indicated with LEDs. The RJ-45 connector can be attached to Category 5 UTP for 100BaseTX; the MII connector can be connected through user-provided transceivers to other physical layers. Both full-duplex and half-duplex operations are supported.