Allied Telesis AT-2716POE - Manual (Page 27)

AT-2716POE Fast Ethernet Fiber & PoE Adapter Installation and User’s Guide
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Figure 8. AT-2716POE Fiber Port
2. Connect the other end of the cable to the appropriate Ethernet network
port or fiber optic port.
After the cable is properly connected at both ends, the adapter port
LED is functional. See Table 1 on page 15 for a description of adapter
port LED operation.
If the node attached to the AT-2716POE copper port is not capable of
auto negotiation, you may need to set the speed and duplex mode of
the AT-2716POE copper port.