D-Link xStack Hardware Installation Manual page 15

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xStack DGS-3120 Series Layer 2 Managed Stackable Gigabit Switch Hardware Installation Guide
LED
Power
Console
RPS
Master
S1
Figure 1-10 LED indicators for the DGS-3120-24PC
Figure 1-11 LED indicators for the DGS-3120-48TC
Figure 1-12 LED indicators for the DGS-3120-48PC
Description
This LED will light green after powering the Switch on to indicate the ready state of the
device. The indicator is dark when the Switch is no longer receiving power (i.e. powered
off).
This LED will blink green during the Power-On Self Test (POST). When the POST is
finished, the LED goes dark. The indicator will light steady green when a user is logged
in through the console port.
This LED will light green if the Redundant Powers Supply is in use. If the indicator is off,
the RPS is not in use. When the switch detects that the RPS is connected, the light will
be blinking. This LED in not available on the DGS-3120-24SC-DC switch.
For standalone Switches, this will light green. For stacked Switches, a solid Green light
indicates this unit is the Master of the stack.
A solid green stacking port 1 LED indicates there is a secure connection (or link) to an
Ethernet device at any of the ports. The LED blinks green where there is reception or
transmission of data occurring at a port. A darkened LED indicates no link on this
stacking module.
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