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Catalyst 3850 Switch Hardware Installation Guide
OL-26779-02
Chapter 3 Installing a Network Module
Installing a Network Module in the Switch
Warning
Do not reach into a vacant slot or chassis while you install or remove a module. Exposed circuitry
could constitute an energy hazard.
Statement 206
Tools and Equipment
You need to supply a number-2 Phillips screwdriver.
Installing Network Modules
Note Although network modules are hot-swappable, we recommend installing a network module before
powering the switch.
Note The switch can operate without a network module, but a blank module (with no ports or SFP slots) is
available and should be installed when uplink ports are not required.
Note The switch generates logs when you insert or remove a network module with SFP slots.
Use only supported network modules and SFP or SFP+ modules. Each module has an internal serial
EEPROM that is encoded with security information. For information about supported SFP modules, see
the “SFP and SFP+ Modules” section on page 1-8.
The network module is hot-swappable. If you remove a module, replace it with another network module
or a blank module.
Note The switch complies with EMC, safety, and thermal specifications when a network module is present.
If no uplink ports are required, install a blank network module.
When installing network modules, observe these precautions:
• Do not remove the EMC plug from the 10-Gigabit Ethernet slot until you install an SFP or SFP+
module. Either a module or a dust plug must be in the slot at all times.
• Do not remove the dust plugs from the fiber-optic SFP modules or the rubber caps from the
fiber-optic cable until you connect the cable. The plugs and caps protect the module ports and cables
from contamination and ambient light.
• Removing and installing a network module can shorten its useful life. Do not remove and insert a
network module more often than is necessary.
• To prevent ESD damage, follow your normal board and component handling procedures when
connecting cables to the switch and other devices.
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Step 2 Remove the module from the protective packaging.