Linkskey LKS-MC110ST - Manual (Page 16)

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2.6 LED Indicators
Link Fault Pass Through Function is disabled
LED
Display Status Interpretation
PWR Power status On Power on
Off Power off
TP LINK TP port link status On Link up and no traffic
Off Link fault
Blink Rx/Tx activities
TP 100M TP port speed status On 100Mbps
Off 10Mbps
TP FDX TP port duplex status On Full duplex
Off Half duplex
Blink Collisions on half duplex
FX LINK FX port link status On Link up and no traffic
Off Link fault
Blink Rx/Tx activities
FX OL FX port optical link On Optical signal is detected
Off No optical signal is detected
Link Fault Pass Through Function is enabled
TP LINK FX LINK FX OL
Interpretation
On On On Both TP and FX ports link up
Off Off On (1) TP port link fault or
(2) FX port received FEFI signal
(FX port Tx path failed.)
Off Off Off (1) TP port link fault or
(2) FX port Rx link failure detected