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:

24

Making Connections

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D-Link DFE-916X manual Optional Module Connections, Module Installation