3Com 3C780 - LinkBuilder FDDI Base Unit User Manual page 55

4. Turn the thumb screws on each end of the module counterclockwise to
loosen them.
5. Holding a thumb screw in each hand, slowly pull the module from its
slot.
6. Place the module on a clean surface, or replace the module in its
original antistatic bag.
7. Place a blanking plate over the empty slot.
NOTE: There must be no empty slots between modules. For example, if you
remove a module from slot 2 and there is a module in slot 3, you must move the
module in slot 3 into slot 2 or else replace the removed module with a new
module. Otherwise, an error condition will exist, and the hub will not function
properly.
8. Reset the hub.
You can either enter the reset command or press the RESET button that is
recessed on the management module.
Installing the Hub
2-15