to insert an sfp module patch cable into the sfp module slot, follow these steps:

    step 1 attach an esd-preventive wrist strap to your wrist and to a bare metal surface on the chassis.

    step 2 insert the sfp module patch cable into the slot until you feel the connector on the cable snap into place in the rear of the slot (see figure 2-16).

   

    step 3 repeat these steps for the second catalyst 3560 switch to which you want to cascade the first switch. see figure 2-17.

   

    to remove an sfp module patch cable from the sfp module slot, release the connector, and pull it from the sfp module slot.