Users Guide

Hardware Overview 139
Stack Master LED and Stack Number Display
When a switch within a stack is the master unit, the Stack Master LED is
solid green. If the Stack Master LED is off, the stack member is not the
master unit. The Stack No. panel displays the unit number for the stack
member. If a switch is not part of a stack (in other words, it is a stack of one
switch), the Stack Master LED is illuminated, and the unit number is
displayed.
Back Panel
The N2128PX-ON has two 21G stacking ports in the rear that accept mini-
SAS connectors. It also has a 16-pin connection for a modular power supply
(Dell MPS1000) supporting an additional 1000W of power.
Power Supply
The Dell EMC Networking N2128PX-ON switch has an internal 715-watt
power supply feeding up to 16 PoE devices at full PoE+ power (500W).
Ventilation System
Two internal fans cool the Dell EMC Networking N2128PX-ON Series
switches.
Information Tag
The back panel includes a slide-out label panel that contains system
information, such as the Service Tag, MAC address, and so on.
LED Definitions
This section describes the LEDs on the front and back panels of the switch.
Port LEDs
Each port on a Dell EMC Networking N2100-ON Series switch includes two
LEDs. One LED is on the left side of the port, and the second LED is on the
right side of the port. This section describes the LEDs on the switch ports.
Each 100/1000/10000BASE-T port has two LEDs. Figure 3-16 illustrates the
100/1000/10000BASE-T port LEDs.