Dell R520, E19S owner manual NIC Indicator Codes, Power Indicator Codes

Item	Indicator, Button, or	Icon	Description
	Connector
			the front and the system status indicator on the back blink
			until one of the buttons is pushed again.
			Press to toggle the system ID on and off. If the system
			hangs during POST, press and hold the system ID button
			for more than five seconds to enter BIOS progress mode.
			To reset the iDRAC (if not disabled in System Setup) press
			and hold for more than 15 seconds.
11	Power supply		AC	495 W, 750 W, 1100 W or 550 W
				(non-redundant),
			Or
			DC	750 W or 1100 W

NIC Indicator Codes

Figure 7. NIC Indicator

1.link indicator

2.activity indicator

Indicator	Indicator Code
Link and activity	The NIC is not connected to the network.
indicators are off
Link indicator is	The NIC is connected to a valid network at its maximum port speed (1 Gbps or 10 Gbps).
green
Link indicator is	The NIC is connected to a valid network at less than its maximum port speed.
amber
Activity indicator is	Network data is being sent or received.
blinking green

Power Indicator Codes

Each AC power supply has an illuminated translucent handle and each DC power supply (when available) has an LED that serves as an indicator to show whether power is present or whether a power fault has occurred.

15