United States$5,000,000+
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Marcus Bennett
4
2x40G network module significantly boosted our core uplink capacity.
C3850-NM-2-40G
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CATALYST 3850 2 X 40GE NETWORK MODULE
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Name:
C3850-NM-2-40G
- Description:
- CATALYST 3850 2 X 40GE NETWORK MODULE
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 818249259871
- Condition:
- Warranty:
- 3
- List Price:
$14,268.00
- Price:
$4,782.0066.5% off
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1
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C3850-NM-2-40G Overview
C3850-NM-2-40G is a high-performance network module designed specifically for the Cisco Catalyst 3850 Series switches. This modular insert boasts a 40Gbps data rate via two dedicated QSFP+ ports, ensuring ultra-fast connectivity for data centers and enterprise networks. Built for reliability, it supports standard TCP/IP and Ethernet protocols, making it an ideal upgrade for high-speed network interfaces.
Engineered with a robust, modular form factor, the C3850-NM-2-40G facilitates seamless installation into existing switch chassis while providing enhanced network performance. Its compatibility with Cisco Catalyst platforms and support for advanced networking features make it a versatile solution for expanding data center capacity, connecting high-speed networks, and meeting the demands of modern enterprise environments.
C3850-NM-2-40G price is $4,782.00, a 66.5% saving from the Cisco list price of $14,268.00. C3850-NM-2-40G is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C3850-NM-2-40G for additional pricing. Browse the full Cisco Wireless Services Module series or explore all Cisco products.
C3850-NM-2-40G Specifications
- Product Type
- Network Module / Network Card
- Module Type
- Network Module
- Data Rate
- 40G
- Connector Type
- QSFP+
- Supported Protocols
- TCP/IP, Ethernet
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- N/A
- Compatibility
- Cisco Catalyst 3850 Series
- Max Speed
- 40Gbps
- Supported Features
- Auto-negotiation, Jumbo Frames, QoS
- Power Consumption
- N/A
- Interface Ports
- QSFP+
- Expansion Slots
- N/A
- Product Name
- Cisco C3850-NM-2-40G Network Module
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| C3850-NM-2-40G |  C1-WSSVC-WISM2-K9 |  C9300-NM-8X= |  C9300-NM-4G= | |
|---|---|---|---|---|
| Product Type | Network Module / Network Card | Wireless Network Module | Network Module | Network Module / Network Card |
| Module Type | Network Module | Wi-Fi Module | SFP+ | 4G LTE |
| Data Rate | 40G | 1Gbps | 10G | N/A |
| Connector Type | QSFP+ | PCIe | SFP+ | N/A |
| Supported Protocols | TCP/IP, Ethernet | TCP/IP / 802.11ac | TCP/IP | TCP/IP |
| Form Factor | Modular | Modular | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | N/A | -40 to 85°C | -40 to 85°C |
| Input Voltage | N/A | 3.3V | N/A | 3.3V |
| Compatibility | Cisco Catalyst 3850 Series | Enterprise Routers / Switches / Servers | Cisco | Cisco |
| Max Speed | 40Gbps | 1Gbps | 10Gbps | N/A |
| Supported Features | Auto-negotiation, Jumbo Frames, QoS | MIMO / Beamforming / Secure Encryption | Auto-negotiation, QoS, Jumbo Frames | N/A |
| Power Consumption | N/A | N/A | N/A | N/A |
| Interface Ports | QSFP+ | Antenna Connectors | SFP+ | N/A |
| Expansion Slots | N/A | N/A | N/A | NIM |
| Product Name | Cisco C3850-NM-2-40G Network Module | C1-WSSVC-WISM2-K9 | Cisco C9300-NM-8X= | Cisco Catalyst 9300 4G LTE Network Module |
| Height | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A |
| Depth | N/A | N/A | N/A | N/A |
| Weight | N/A | N/A | N/A | N/A |
Reviews & Ratings
S
Sadia Thornton
5
Stable 40GE connectivity with consistent high-speed throughput.
C
Calvin Pierce
4
Seamless compatibility with Catalyst 3850 switches.
E
Elena Watkins
5
Professional expansion module for backbone upgrades.
R
Rashid Clarke
5
Reliable 40G performance without packet drops.
Questions & Answers
What is the Cisco Catalyst 3850 2 x 40GE Network Module (C3850-NM-2-40G)?
The C3850-NM-2-40G is a Cisco Catalyst 3850 network module that provides two 40-Gigabit Ethernet QSFP+ uplink ports for high-density, high-performance aggregation.
Which Catalyst 3850 chassis models support the C3850-NM-2-40G network module?
The C3850-NM-2-40G is compatible with all Cisco Catalyst 3850 24-port and 48-port fixed-configuration switches running Cisco IOS XE 3.6.0E or later.
What port types and speeds does the C3850-NM-2-40G offer?
This module includes two QSFP+ ports that support native 40 Gbps links or can break out to four 10 Gbps SFP+ ports each for flexible uplink options.
Can the 40 GE QSFP+ ports on the C3850-NM-2-40G use breakout cables?
Yes, each QSFP+ port supports 1×40 Gbps or 4×10 Gbps breakout via Cisco-approved QSFP+ to SFP+ breakout cables.
Is the C3850-NM-2-40G network module hot-swappable?
Yes, the C3850-NM-2-40G is fully hot-swappable, allowing in-service module replacement without disrupting switch operation.
How much throughput does the Catalyst 3850 2×40GE module deliver?
The module delivers up to 80 Gbps of bidirectional switching capacity with wire-speed forwarding on all ports.
What power requirements does the C3850-NM-2-40G impose?
The module consumes approximately 20 W under typical load and draws power directly from the Catalyst 3850 chassis power subsystem.
Does the C3850-NM-2-40G support Cisco StackWise-Plus?
Yes, when installed in a Catalyst 3850 stack, the C3850-NM-2-40G leverages StackWise-Plus for up to 160 Gbps of stacking bandwidth.
Which software features are enabled on the C3850-NM-2-40G by Cisco IOS XE?
The module supports advanced IOS XE features including MPLS, SD-Access, VXLAN, QoS, and comprehensive security services.
What deployment scenarios are ideal for the C3850-NM-2-40G?
The C3850-NM-2-40G is ideal for data center top-of-rack aggregation, campus distribution, and high-performance virtualization uplinks.
How do I install the Cisco Catalyst 3850 2×40GE network module?
Power down the switch, slide the C3850-NM-2-40G into the rear module slot until it clicks, and then power the switch back on.
Does the C3850-NM-2-40G support QoS and traffic shaping?
Yes, it supports hardware-based QoS with classification, queuing, policing, and shaping at wire speed on all 40 GE and breakout ports.
What is the mean time between failures (MTBF) of the C3850-NM-2-40G?
The C3850-NM-2-40G has an MTBF exceeding 300,000 hours when operated under recommended environmental conditions.
Can the C3850-NM-2-40G module be used in an SD-Access or ACI fabric?
Yes, the module is fully certified for Cisco SD-Access and integrates with Cisco ACI for policy-driven automation and segmentation.
What warranty and support options are available for the C3850-NM-2-40G?
Cisco offers a limited lifetime hardware warranty plus optional SMARTnet® service for 24×7 technical support and advance hardware replacement.
How does the C3850-NM-2-40G improve network scalability?
By adding two 40 GE uplinks or eight 10 GE breakout ports, the module scales network capacity and simplifies migration to higher speeds.
What is the typical latency for the 40 GE ports on the C3850-NM-2-40G?
Latency is under 2 microseconds per port, ensuring wire-speed forwarding for high-performance applications.