Cooling; Power Supplies; Stacking - Extreme Networks ExtremeSwitching 5420 Series Installation Manual

Cooling

There are also two USB 2.0 Type A ports on the front panel. They can host removable
devices like flash drives.
Note
The first USB storage device inserted is mounted and can be used under the
operating system as /usr/local/ext. A second inserted USB storage device is
not used until the first one is removed.
Note
Cooling
Each base model is available with front-to-back cooling.
Switch cooling is provided by one replaceable fan module or two or three fixed
fans. The available fan modules use airflow from front to back. Switch fans are not
responsible for cooling the power supplies; power supplies have integrated cooling fans
that operate independently of the switch fan.
A spare fan module (XN-FAN-000) with front-to-back airflow is available for 5420 Series
switches.

Power Supplies

5420F models have 1 hot-swappable PSU and 1 fixed PSU. 5420M models have 2 hot-
swappable PSUs. For more information about the power supplies used in the 5420
Series switches, see
Power supplies are ordered separately.

Stacking

Each 5420 Series switch comes equipped with two 10GbE stacking ports, also referred
to as Universal Ethernet ports. When running Switch Engine, up to eight systems can
be stacked using qualified SFP+ direct attach cables and optical transceivers located on
the front panel of the switch. Stacking is not supported when running Fabric Engine.
5420 - Standard 10 Gb Ethernet Optics and passive and active cables can be used in
14 ExtremeSwitching 5420 Series Hardware Installation Guide
Power Supplies for Use with Your Switch
ExtremeSwitching 5420 Series Overview
on page 35.