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Catalyst 3850 Switch Hardware Installation Guide
OL-26779-02
Chapter 3 Installing a Network Module
SFP and SFP+ Modules
Warning
Class 1 laser product.
Statement 1008
• Do not remove the dust plugs from the SFP modules or the rubber caps from the fiber-optic cable
until you are ready to connect the cable. The plugs and caps protect the module ports and cables
from contamination and ambient light.
• Removing and installing an SFP module can shorten its useful life. Do not remove and insert any
SFP 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.
Caution To avoid damage to the network module, install the network module before you install the SFP or SFP+
modules.
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Step 2 Find the send (TX) and receive (RX) markings that identify the top of the SFP module.
On some SFP modules, the send and receive (TX and RX) markings might be shown by arrows that show
the direction of the connection.
Step 3 If the SFP module has a bale-clasp latch, move it to the open, unlocked position.
Step 4 Align the module in front of the slot opening, and push until you feel the connector snap into place.
Figure 3-6 Installing an SFP Module in the Network Module
Step 5
If the module has a bale-clasp latch, close it to lock the SFP module in place.
Step 6 Remove the SFP dust plugs and save.
Step 7 Connect the SFP cables.
333418
C3850-NM-4-1G
Catalyst 3850 48 PoE+