Allied Telesis AT-SBx31CFC960 - Manual (Page 151)

SwitchBlade x3106 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
151
Figure 94. Removing the Dust Cover from an SFP or a CSFP Transceiver
Note
The dust cover protects the fiber optic ports on the transceiver from
dust contamination. It should not be removed until you are ready to
connect the fiber optic cable.
6. Connect the fiber optic cables to the port on the transceiver, as shown
in Figure 95 on page 152. The connectors should snap into the ports. If
you are connecting only one cable to a CSFP transceiver, you may
connect it to either port.