A crossover cable is a straight-through twisted-pair cable in which the wires have been crossed. The figure below shows the pin assignments for an Ethernet or Fast Ethernet crossover cable:
NOTE: The first twisted-pair port (Port 1) is shared with the Uplink port. If you connect a hub to the Uplink port, then do not use Port 1.
Optional Module Connections
There are three optional modules that may be added to any of the DFE-916 series hubs. Each hub can accommodate one module. Each of the modules offers a different additional network interface that allows for greater flexi- bility in how these hubs may be used in a network.
The sections that follow provide a brief overview of the module and basic instructions on various settings and indicators.
Module Installation
The installation procedure for each module is the same. Additional infor- mation about each module is provided below.
To install any of the modules:
