Allied Telesis AT-9448Ts/XP (Basic Layer 3) - Manual (Page 96)

Chapter 7: Troubleshooting
96
Transceiver is Installed but the Status is “Not Present”
If an 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.