Datasheet

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Figure 2. Network Modules with Four Gigabit Ethernet, Two 10 Gigabit Ethernet SFP+, or Four 10 Gigabit Ethernet SFP+
Interfaces
Table 2. Network Module Numbers and Descriptions
Product Number
Product Description
C3850-NM-4-1G
4 x Gigabit Ethernet network modules
C3850-NM-2-10G
4 x Gigabit Ethernet/2 x 10 Gigabit Ethernet network modules
C3850-NM-4-10G
4 x Gigabit Ethernet/4 x 10 Gigabit Ethernet network modules
Note: The C3850-NM-4-10G module is supported on the 48-port models only.
An SFP+ receptacle supports both 10 Gigabit Ethernet and Gigabit Ethernet modules, allowing customers to use
their investment in Gigabit Ethernet SFP modules and upgrade to 10 Gigabit Ethernet when business demands
change without having to do a comprehensive upgrade of the access switch. The three network modules are hot
swappable and can be used in any of the combinations shown in Table 3.
Table 3. Network Module Configurations
Interface Options
Network Module
10 Gigabit Ethernet SFP+ Ports
Gigabit Ethernet SFP Ports
4 x Gigabit Ethernet
0
4
4 x Gigabit Ethernet/2 x10 Gigabit Ethernet
network modules
2
0
1
3
2
2
0
4
4 x Gigabit Ethernet/4 x10 Gigabit Ethernet
network modules
4
0
0
4
2
2
3
1
1
3
Dual Redundant Modular Power Supplies
The Cisco Catalyst 3850 Series Switches support dual redundant power supplies. The switch ships with one power
supply by default, and the second power supply can be purchased at the time of ordering the switch or at a later
time. If only one power supply is installed, it should always be in power supply bay 1. The switch also ships with
three field-replaceable fans. (See Figure 3.)