Allied Telesis x510 Series - Manual (Page 106)

Chapter 8: Cabling the Networking Ports
106
Figure 52. 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 4 to install
the remaining SFP transceivers in the switch.
5. Remove the dust cover from the transceiver, as shown in Figure 53.
Figure 53. Removing the Dust Cover from an SFP Transceiver
6. Verify the position of the handle on the SFP transceiver. If the
transceiver is in a top slot, the handle should be in the upright position,
as shown in Figure 54 on page 107. If the transceiver is in a bottom
slot, the handle should be in the down position.