Allied Telesis GS950 PS V2 Series - Figure 40: Installing an SFP Transceiver; Figure 41: Removing the Dust Cover from an SFP Transceiver

GS950 PS V2 Series of Gigabit Ethernet PoE+ Switches Installation Guide
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Figure 40. Installing an SFP Transceiver
Note
If you are ready to attach the fiber optic cable to the transceiver,
continue with the next step. Otherwise, repeat steps 1 to 3 to install
another SFP transceiver in the switch.
4. Remove the dust cover from the transceiver, as shown in Figure 41.
Figure 41. Removing the Dust Cover from an SFP Transceiver