Lan Status Led; Battery Status Lights - Dell Precision 3520 Owner's Manual

LAN status LED

The RJ-45 connector includes two LEDs in the top corners. When the connection is oriented as shown below, the LED in the
top-left corner is the link integrity LED and the one in the top-right corner is the network activity LED.
The link integrity LED can display three colors: green, orange, and yellow. These colors indicate the three possible network
connection speeds: 10 Mbps, 100 Mbps, and 1000 Mbps, respectively. These LED states are shown in the image below. The
network activity LED is always yellow and blinks to indicate passing network traffic.
The LAN controller supports two status LEDS. A link LED displays the current transfer rate supported (10, 100, or 1000Mbps),
while the activity LED indicates when the card is receiving or transmitting data. The following table illustrates the LEDs'
operation.
Table 18. Status LEDs
LED
Activity
Link

Battery status lights

If the computer is connected to an electrical outlet, the battery light operates as follows:
Alternately An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop. Re-plug battery
blinking amber connector, replace battery if the issue reoccurs.
light and white
light
Alternately Temporary battery failure with AC adapter present. Re-plug battery connector, replace battery if the
blinking amber issue reoccurs.
light with steady
white light
Constantly Fatal battery failure with AC adapter present. Fetal battery, replace the battery.
blinking amber
light
Light off Battery in full charge mode with AC adapter present.
White light on Battery in charge mode with AC adapter present.
Status
Amber
Off
Green
Orange
Yellow
Description
The LAN controller is receiving or
transmitting data
The LAN controller is idle
The LAN controller is operating in 10
Mbps mode
The LAN controller is operating in 100
Mbps mode
The LAN controller is operating in 1000
Mbps (Gigabit) mode
Diagnostics 103