when connecting the des-1004/ des-1008 switch to another switch, a bridge or a hub, a modified crossover cable is necessary. please review these products for matching cable pin assignment.

    the following diagram and tables show the standard rj-45 receptacle/connector and their pin assignments for the switch-to-network adapter card connection, and the straight/ crossover cable for the switch-toswitch/ hub/bridge connection.

   

   

    the standard category 3 cable, rj-45 pin assignment

    the following shows straight cable and crossover cable connection:

   

    straight cable for switch (uplink mdi-ii port) to switch/hub or other devices connection

   

    crossover cable for switch (mdi-x port) to switch/hub or other network devices (mdi-x port) connection