NIC indicator codes
Each NIC on the back of the system has indicators that provide information about the activity and link status. The activity LED
indicator indicates if data is flowing through the NIC, and the link LED indicator indicates the speed of the connected network.
Figure 10. NIC indicator codes
1. Link LED indicator
2. Activity LED indicator
Table 13. NIC indicator codes
Status Condition
Link and activity indicators are off. The NIC is not connected to the network.
Link indicator is green, and activity indicator is blinking
green.
The NIC is connected to a valid network at its maximum port speed,
and data is being sent or received.
Link indicator is amber, and activity indicator is blinking
green.
The NIC is connected to a valid network at less than its maximum
port speed, and data is being sent or received.
Link indicator is green, and activity indicator is off. The NIC is connected to a valid network at its maximum port speed,
and data is not being sent or received.
Link indicator is amber, and activity indicator is off. The NIC is connected to a valid network at less than its maximum
port speed, and data is not being sent or received.
Link indicator is blinking green, and activity is off. NIC identify is enabled through the NIC configuration utility.
Power supply unit indicator codes
AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator. The DC PSUs have an LED
that serves as an indicator. The indicator shows whether power is present or if a power fault has occurred.
Figure 11. AC PSU status indicator
1. AC PSU status indicator/handle
Table 14. AC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Dell EMC PowerEdge R640 overview 21
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