The FE-TX or FE-FX port adapters provide a 100-Mbps, 100BaseT Fast Ethernet interface. Both full-duplex and half-duplex operations are supported for the FE-TX and FE-FX port adapters. The FE-TX and FE-FX port adapters contain the enabled LED, standard on all port adapters, and a bank of three status LEDs for the ports. After system initialization, the enabled LED goes on to indicate that the FE-TX port adapter has been enabled for operation.