There are also two USB 2.0 Type A ports on the front panel. They can host removable
devices like ash drives.
Note
The rst 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 rst 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 xed
fans. The available fan modules use airow 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 airow is available for 5420 Series
switches.
Power Supplies
5420F models have 1 hot-swappable PSU and 1 xed PSU. 5420M models have 2 hot-
swappable PSUs. For more information about the power supplies used in the 5420
Series switches, see Power Supplies for Use with Your Switch on page 35.
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 SwitchEngine, up to eight systems can
be stacked using qualied 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
Cooling ExtremeSwitching 5420 Series Overview
14 ExtremeSwitching 5420 Series Hardware Installation Guide
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