Connectivity status, Connection port led label off on flashing, Led status indicators – Nitek EL1551U User Manual
Page 7: Utp side of device network port side

Connectivity Status
CONNECTION
PORT
LED LABEL
OFF
ON
FLASHING
Network
Power
No Power
Power Good
NA
Link Status No Ethernet Link
Ethernet Link Good
NA
Link
PoE Out
No PoE Power
Out
PoE Power Good
NA
10/100
No Link
100Mb
10Mb
LED STATUS INDICATORS
UTP Side of Device
Network Port Side
10/100 Link LED Indicator
• On Solid = 100Mb
• Flashing = 10Mb
• Off = No Link
Link Status LED Indicator
• On Solid = Ethernet Link
• Off = No Ethernet Link
Power LED Indicator
• On Solid = The Unit is powered
and ready to use
• Off = The unit is not powered
PoE Out LED Indicator
• On = PoE is being provided
out the network port
• Off = PoE is “not” being sent
out the network port
UTP Connector
• Attaches to twisted
pair wires
Optional Power Input
• Class II 48-56VDC input to create PoE
in installations where a PoE switch is
not available.
• On Receiver used to power the system
when a PoE switch is not available.
• On Transmitter used to provide greater
PoE power out the network port.