IBM IntelliStation E Pro Hardware Maintenance Manual page 100

4. Disconnect the speaker cable from the system board.
5. Grasp the bracket assembly and pull it gently toward the left side of the chassis
6. Pull the bracket assembly out of the computer.
7. Press on the tabs of the speaker until it comes away from the bracket; then, pull
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IBM IntelliStation E Pro Types 6216 and 6226: Hardware Maintenance Manual
Locking tabs
until the tabs are free of the chassis.
the speaker out of the bracket.
Tab slots
Locking tabs
Support tabs