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KSwitch D4 MM Managed Ethernet Switch - Preliminary User Guide, Rev. 0.9
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4.1.3.
Indicator LEDs (P1, P2, ALM and Ethernet)
The LEDs indicate the normal operation of the switch and in the case of failure may be used for faultfinding.
Figure 5: Indicator LEDs
8-port
12-port (4-ports on bottom side)
18-port
Table 4: Indicator LEDs
LED Name
Indicator /Color Condition
P1/P2
On Green
P1/P2 power line has power
Off
P1/P2 power line disconnect or does not have supply power
ALM
On Red
Ethernet link fail alarm or power failure alarm occurs
Off
No Ethernet link fail and no power failure alarm
Ethernet Port (RJ45 Copper)
Link/Act
On Yellow
Ethernet link up but no traffic is detected
Flashing Yellow
Ethernet link up and there is traffic detected
Off
Ethernet link down
Ethernet Port (Fiber SFP)
Link/Act
On Green
Ethernet link up
Flashing Yellow
Ethernet link up and there is traffic detected
Off
Ethernet link down