Transceiver Is Installed But The Status Is "Not Present - Allied Telesis AT-9408LC/SP Installation Manual

Transceiver is Installed but the Status is "Not Present"

If a GBIC, SFP, or XFP transceiver is installed in a transceiver slot but the
Uplink Information menu in the AT-S63 Management Software interface
displays "Not Present" for that port, do the following:
Verify that the transceiver is completely inserted in the slot on the front
of the switch.
Note
The uplink status does not reflect whether a fiber optic cable is
connected to the transceiver.
AT-9400 Series Gigabit Ethernet Switches Installation Guide
71