3Com CoreBuilder 9000 Getting Started Manual page 59

Removing an ATM Interface Module from the 16-Slot/8-Slot Chassis
Figure 38 Loosening the Captive Screws
4 Move the module ejector handles to the outward position.
5 Gently slide the ATM Interface Module out of the chassis (Figure 39).
Figure 39 Removing the ATM Interface Module from the Chassis
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Module
Ejector
Handles Open