Cisco C3850-NM-2-40G Network Module 2x 40 Gigabit Ethernet QSFP+ Ports C3850NM240G

Description:

The Cisco C3850-NM-2-40G Network Module is a 40 Gigabit Ethernet expansion module used in Cisco Catalyst 3850 series switches to provide high-speed uplink connectivity. Commonly installed in enterprise campus networks, data center aggregation layers, and core switching environments requiring high-bandwidth fiber connections. Maintenance teams and system integrators use this module for network expansion, upgrades, and replacement of existing uplink modules to increase throughput and scalability.

Applications:

The Cisco C3850-NM-2-40G network module is commonly used in enterprise and data center environments where high-speed uplink connectivity is required to support increasing network traffic demands. It is deployed in campus core and distribution layers, server aggregation points, and high-performance switching environments where 40 Gigabit Ethernet links are needed for backbone connectivity. This module enables seamless data transfer between switches, storage systems, and network infrastructure, supporting bandwidth-intensive applications such as virtualization, cloud services, and large-scale data processing.

Technical Specifications:

• Manufacturer: Cisco
• Model / Part Number: C3850-NM-2-40G
• Product Type: Network Expansion Module
• Compatible Devices: Cisco Catalyst 3850 Series Switches
• Ports: 2x QSFP+ 40 Gigabit Ethernet Ports
• Data Rate: 40 Gbps per port
• Interface Type: QSFP+
• Hot Swappable: Yes
• Installation Type: Modular uplink slot
• Connectivity: Fiber optic (QSFP+ transceivers required)
• Application: High-speed uplink and backbone connectivity
• Form Factor: Plug-in module

Common Replacements:

• Cisco C3850-NM-4-10G
• Cisco C3850-NM-8-10G
• Cisco C9300-NM-2Q