Chassis ID Printed CircuitBoardFor the CoreBuilder® 9000 Enterprise SwitchThe chassis ID printed circuit board (PCB) (Model Number 3CB9EE) for theCoreBuilder ® 9000 Enterprise Switch 7-slot chassis, 8-slot chassis, or16-slot chassis is a serial EEPROM that contains the chassis ID informationand a temperature sensor. This ID PCB is mounted on a PCB assemblycomponent that connects to a 14-pin DIP socket at the top of thebackplane inside the chassis.WARNING: The CoreBuilder 9000 7-slot chassis, 8-slot chassis, and16-slot chassis ID PCB must be installed, removed, or replaced only bytrained service personnel. Do not attempt to install, remove, or replace aCoreBuilder 9000 chassis ID PCB. Call your 3Com customer supportnumber (1-800) 638-3266. Outside the United States, contact your local3Com office.Figure 1 CoreBuilder 9000 Enterprise Switch Chassis ID PCB

3Com CoreBuilder 9000 Manual