Cisco C3850-NM-4-1G 4 Ports Optical Module
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C3850-NM-4-1G Cisco Catalyst 3850 4X1GE Expansion Module New

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Part Number#: C3850-NM-4-1G
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Short Description:
C3850-NM-4-1G Catalyst 3850 Switches 1 Gigabits Per Second (GBPS) 4X1GE 4 Ports Small Form-Factor Pluggable (SFP) (mini-GBIC) 4 x Expansion Slots Gigabit Ethernet Expansion Module | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Performance of Expansion Module

The ExC3850-NM-4-1G is a network module that can be used to expand the connectivity and performance of a Cisco Catalyst 3850 series switch. It provides four additional 1 Gigabit Ethernet (1GE) uplink ports, allowing you to increase the number of available network connections and improve the overall performance of the switch.

Some of the key features of the ExC3850-NM-4-1G include:

  • Four 1GE SFP uplink ports: These ports provide high-speed connectivity to other network devices, such as servers, storage systems, and other switches. The SFP ports can be configured with a variety of SFP transceivers, depending on the type of connectivity you need (e.g. fiber, copper).
  • Enhanced performance: The ExC3850-NM-4-1G module is designed to work seamlessly with the Cisco Catalyst 3850 series switches, providing high-speed, low-latency connectivity to help improve the overall performance of the network.
  • Advanced features: The module supports a range of advanced features, such as Quality of Service (QoS), link aggregation, and jumbo frames, to help optimize network performance and improve the user experience.

Reliability of Catalyst Network Module

The Cisco C3850-NM-4-1G is a network module for the Cisco Catalyst 3850 series switches that provides four Gigabit Ethernet ports for connecting to end devices. It is designed to be a reliable and high-performance networking solution for enterprise environments.

Some of the features that contribute to the reliability of the C3850-NM-4-1G include:

  • High-quality components: The network module uses high-quality components that are designed to withstand the rigors of enterprise networking environments.
  • Redundancy: The network module can be used in conjunction with other network modules and the switch's built-in redundancy features to provide increased reliability and uptime.
  • Quality of Service (QoS): The network module supports advanced QoS features that allow you to prioritize different types of network traffic, ensuring that mission-critical applications and services receive the necessary bandwidth and network resources.
  • Enhanced security: The network module supports advanced security features that help protect against network threats and unauthorized access, improving the overall security and reliability of the network.

Multicast traffic management involves controlling the flow of multicast traffic within a network to optimize its performance and ensure that it reaches its intended destinations. Cisco Catalyst 3850 4X1GE Expansion Module (C3850-NM-4-1G) is a network expansion module that can be installed in the Cisco Catalyst 3850 series switches to increase their port capacity and enhance their capabilities.

Multicast Traffic Management

The C3850-NM-4-1G expansion module has four 1 Gigabit Ethernet (GE) ports, which can be used to connect devices and network segments to the switch. These ports can also be used to manage multicast traffic by configuring various multicast features and settings in the switch.

Some of the multicast features that can be configured on the Cisco Catalyst 3850 switch include:

  • IGMP snooping: This feature allows the switch to listen in on IGMP messages exchanged between multicast routers and hosts. By doing so, the switch can determine which ports need to receive multicast traffic and which can be pruned to optimize bandwidth usage.
  • PIM snooping: This feature allows the switch to snoop on Protocol Independent Multicast (PIM) messages exchanged between multicast routers. By doing so, the switch can determine which multicast streams need to be forwarded to which ports and can prune unnecessary streams to conserve bandwidth.
  • IGMP filtering: This feature allows the switch to filter out unwanted multicast traffic by blocking IGMP messages from specific hosts or groups. This can help to reduce network congestion and improve performance.
  • Multicast VLAN registration: This feature allows the switch to register multicast groups with specific VLANs. By doing so, the switch can limit the scope of multicast traffic to specific VLANs and reduce the amount of traffic that needs to be forwarded.

Main Specification about this Cisco C3850-NM-4-1G

  • Manufacturer: Cisco
  • Model Number or SKU# C3850-NM-4-1G
  • Product Series: Catalyst 3850
  • Product Type: Expansion Module

Technical Information for Network Module

  • Total Number of Ports 4
  • Port Speed: 10/100/1000
  • Port Type: SFP
  • MTBF: 7,052,100 Hours
  • Application/Usage: Data Networking
  • Application/Usage: Optical Network

I/O Expansions of Expansion Module

  • Interface Provided: 4 - SFP (mini-GBIC)
  • Compatible Slot 1 x expansion slot

Network & Communication

  • Connectivity Technology: Wired
  • Data Link Protocols: Gigabit Ethernet
  • Data Transfer Rate: 1 GBPS
  • Form Factor: Plug-in module
  • Ethernet interface type: Fast Ethernet, Gigabit Ethernet


  • Cisco Catalyst 3850-12S-E
  • Cisco Catalyst 3850-12S-S
  • Cisco Catalyst 3850-12S-X
  • Cisco Catalyst 3850-12X48U-E
  • Cisco Catalyst 3850-12X48U-S
  • Cisco Catalyst 3850-24P-BA
  • Cisco Catalyst 3850-24P-E
  • Cisco Catalyst 3850-24P-L
  • Cisco Catalyst 3850-24P-S
  • Cisco Catalyst 3850-24S-E
  • Cisco Catalyst 3850-24S-S
  • Cisco Catalyst 3850-24T-E
  • Cisco Catalyst 3850-24T-L
  • Cisco Catalyst 3850-24T-S
  • Cisco Catalyst 3850-24U-E
  • Cisco Catalyst 3850-24U-L
  • Cisco Catalyst 3850-24U-S
  • Cisco Catalyst 3850-24XU-E
  • Cisco Catalyst 3850-24XU-S
  • Cisco Catalyst 3850-48F-E
  • Cisco Catalyst 3850-48F-L
  • Cisco Catalyst 3850-48F-S
  • Cisco Catalyst 3850-48P-E
  • Cisco Catalyst 3850-48P-L
  • Cisco Catalyst 3850-48P-S
  • Cisco Catalyst 3850-48T-E
  • Cisco Catalyst 3850-48T-L
  • Cisco Catalyst 3850-48T-S
  • Cisco Catalyst 3850-48U-E
  • Cisco Catalyst 3850-48U-L
  • Cisco Catalyst 3850-48U-S

These switches are compatible with a variety of software and hardware components, including:

  • Cisco IOS XE 3.6.xE or later
  • Cisco IOS XE 3.7.xE or later
  • Cisco IOS XE 3.3.xSE or later
  • Cisco IOS XE 3.4.xSE or later
  • Cisco IOS XE 3.5.xE or later
  • Cisco IOS XE 3.6.xSE or later
  • Cisco IOS XE 3.7.xSE or later
  • Cisco Catalyst 3850 Series StackWise-480 and StackPower cables
  • Cisco Catalyst 3850 Series Network Modules
  • Cisco Catalyst 3850 Series power supplies

For all your expansion module needs, we've got you covered with high-performance devices that increase functional capability and ease business processes.

You can talk to any of our staff and consult on what would be the best way forward when getting an expansion module to complement and enhance existing infrastructure and meet your immediate and future needs.

We have hardware level 12 with firmware 3.0 or higher modules that allow for the installation of up to 14 expansion modules below the base module for resilient performance. Expansion modules connect to the base module using USB Type-A connectors. That's not all, we have hardware level 11 and lower that supports up to 9 expansion modules.

With an expansion module, you get additional cartridge storage as well as tape drive capacity. We have expansion modules that contain up to two drives and two power supplies. You can choose to have the expansion module with tape drives and power supply installed so that it makes setup easier from your end. Expansion modules will need a power supply only if you install a tape drive in them. A single power supply can actually power two drives. However, you can add a second power supply for redundancy purposes. Without a tape drive, the expansion module is powered via the USB cable connected to the base module.

Expansion modules require 2U rack space and will be shipped with the necessary mounting hardware used to secure them to the rack.

The top features of the expansion modules we've listed include:

  • High-resolution LCD screens of up to 5" with backlight for a vibrant visual experience and ease of use. The expansion modules have programmable line keys ensuring that the interface is intuitive and interactive.
  • Straightforward setup to facilitate easy installation.
  • Availability of a wide range of custom configurations
  • Advanced call handling and contact management capabilities to help increase productivity.
  • XML browser functionality
  • Compatibility across systems which helps to leverage existing IT infrastructure investment. All the expansion modules we've made available will help to enhance your existing desktop solutions.
  • Seamless fusion with planar and fibre technology
  • Compatibility with phone models such as SIP-T27P and SIP-T29G helps to expand functionality.
  • Availability of color icons that enhance the visual experience for users. There are color-coded independent actionable control keys that facilitate fast switching between pages.
  • Ability to link together a maximum of six phone systems and up to two expansion modules from a single host phone.
  • Support for up to 3 modules on a daisy-chain
  • Reduced excess loss and PDL
  • Support for advanced call functions including call forwarding, call transfers, multi-person conferencing, call pickup, LDAP, speed dial, and BFL list.
  • Shipped with a stand that has two adjustable angles

You can find almost every module option in our catalogue, we have modules with different numbers of ports, from 1-port options to 50- and 90-port options, you can also check out our 20 Gigabit, 48 Gigabit, and 100 Gigabit expansion modules. Browse through our categories to find the best option for your needs.

All expansion modules make for ideal solutions for administrative assistants, receptionists, and contact center employees due to the ability to easily manage large call volumes and monitor a large number of contacts.

Here, you can check more available conditions of your desired product C3850-NM-4-1G at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


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