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C3850-NM-4-10G
Cisco Catalyst 3850 Network Module, 4x 10GE SFP+ Ports, Upli...
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C3850-NM-4-10G is the four-port 10 Gigabit Ethernet uplink option in the Cisco Catalyst 3850 network module family. It installs in the Catalyst 3850 proprietary network module slot and is supported on WS-C3850-48T, WS-C3850-48P, WS-C3850-48F, WS-C3850-48U, WS-C3850-12X48U, WS-C3850-24XU, WS-C3850-12XS, and WS-C3850-24XS switch models. The module class is Uplink, the host interface is modular, and the front-panel connectivity uses four SFP+ receptacles that also accept supported 1G SFP operation. Cisco positions it for 48-port Gigabit Ethernet models and 12-port or higher 10 Gigabit Ethernet Catalyst 3850 models, so compatibility screening starts with the base switch PID before optics are selected. C3850-NM-2-10G differs by providing only two 10G-capable positions, while this SKU gives four 10G-capable uplink slots for higher access-to-distribution density.
10GbE carries the primary uplink capacity through four SFP+ slots, with 1GbE operation available when supported SFP optics are installed. Gigabit Ethernet and 10 Gigabit Ethernet are the documented data link protocols, and Cisco notes that SFP+ receptacles support both Gigabit Ethernet and 10 Gigabit Ethernet modules. C3850-NM-4-10G uses TenGigabitEthernet1/1/1 through TenGigabitEthernet1/1/4 as the valid default interface set, even when the ports operate at 1G with SFPs. Only those four TenGigabitEthernet interfaces are configured for this module, while the parallel GigabitEthernet interface entries are disregarded in the CLI. Hot-swappable operation supports online insertion and removal when the Catalyst 3850 installation procedure is followed, and port LEDs show link, activity, fault, and disabled states. The 0.34 kg module weight and 3,835,330-hour MTBF support spare planning for long-running Catalyst 3850 estates.
The module slides into the Catalyst 3850 network module bay and should be installed without connected cables or inserted optics, then secured with captive screws before SFP or SFP+ modules are added. A minimum five-second interval between online insertion and removal events protects module detection during service work, and unsupported cabling or noncompliant optics should be removed before the uplink is returned to operation. C3850-NM-4-10G is available through ORM Systems in new and certified refurbished condition, with refurbished units checked through contact inspection, serial verification, and functional testing in a compatible Catalyst 3850 chassis. Request pricing from ORM Systems for a single replacement, spare pool, or matched multi-site quantity. Enterprise buyers standardising Catalyst 3850 uplinks can source mixed C3850-NM density tiers for staged 1G-to-10G migration and fleet maintenance.
C3850-NM-4-10G price is $1,017.00, a 86.2% saving from the Cisco list price of $7,360.00. C3850-NM-4-10G is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C3850-NM-4-10G for additional pricing. Browse the full Cisco Catalyst 3850 Network Module series or explore all Cisco products.
C3850-NM-4-10G sits in the network module bay of a compatible Catalyst 3850 access switch and presents four 10 Gigabit Ethernet SFP+ uplinks toward distribution. Engineers terminate endpoint VLANs on the fixed access ports, then carry northbound trunks or routed links through the module using matched Cisco-compatible optics. The module supports 1G and 10G uplink migration within the same access closet. The result is higher uplink capacity from the existing Catalyst 3850 edge without changing endpoint copper cabling.
A Catalyst 3850 stack uses C3850-NM-4-10G on selected members to distribute 10G uplinks across the stack rather than concentrating upstream connectivity on one switch. Network teams place redundant links into separate physical members, configure EtherChannel or routed uplinks according to the design, and match SFP+ optics to the distribution layer. C3850-NM-4-10G gives the stack four 10G handoff points per installed module. The result is a cleaner failure domain for stacked access switching and upstream connectivity.
The module operates as a bandwidth upgrade point for Catalyst 3850 environments that still meet access switching requirements but need faster upstream paths. Engineers replace lower-speed uplink modules with C3850-NM-4-10G, validate base-switch compatibility, reuse supported 1G optics during transition, then introduce 10G SFP+ links as distribution ports become available. This role keeps the Catalyst 3850 platform in service while removing 1G uplink pressure. The result is a controlled migration path from Gigabit uplinks to 10G aggregation.
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| C3850-NM-4-10G |  C3850-NM-4-1G |  C3850-NM-8-10G |  C3850-NM-2-10G | |
|---|---|---|---|---|
| Product Type | Ethernet Uplink Expansion Module | Network Module | Network Module / Network Card | Ethernet Network Module |
| Module Type | Uplink | Network Module | SFP+ | Uplink |
| Data Rate | 1GbE / 10GbE | 1Gbps | 10Gbps | 1GbE / 10GbE |
| Connector Type | 4 x SFP+ / SFP cages | RJ-45 | SFP+ | SFP; SFP+ |
| Supported Protocols | Gigabit Ethernet; 10 Gigabit Ethernet | TCP/IP | TCP/IP | Gigabit Ethernet; 10 Gigabit Ethernet |
| Form Factor | Modular | Modular | Modular | Modular |
| Operating Temperature | -5 to 45°C, AC power supply | 0 to 45°C | 0 to 50°C | -5 to 45°C normal operation |
| Supported Features | Hot-swappable; port status LEDs; TenGigabitEthernet1/1/1-1/1/4 default interfaces | Auto-negotiation, Jumbo Frames | Auto-negotiation, Jumbo Frames, QoS | Hot-swappable; port status LEDs; Cisco SFP/SFP+ optic support |
| Interface Ports | 4 x 10G SFP+ slots | Ethernet | SFP+ | 2 x 10GE SFP+; 2 x 1GE SFP |
| Product Name | Cisco Catalyst 3850 4 x 10GE Network Module | Cisco Catalyst 3850 4-port 1-Gigabit Ethernet Network Module | Cisco Catalyst 3850 Network Module 8x10G (C3850-NM-8-10G) | Cisco Catalyst 3850 2 x 10GE Network Module |
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The Cisco C3850-NM-4-10G is a Catalyst 3850 network module that adds four 10 Gigabit Ethernet SFP+ uplink ports to compatible Cisco Catalyst 3850 switches. It is used when a 3850 access or aggregation switch needs higher-speed fiber uplinks to distribution, core, or server-side switching without replacing the base switch chassis.
C3850-NM-4-10G identifies a Cisco Catalyst 3850 network module with four 10 Gigabit Ethernet uplink interfaces. The C3850 portion ties it to the Catalyst 3850 switching family, NM stands for network module, 4 refers to the uplink slot count, and 10G indicates 10 Gigabit Ethernet SFP+ connectivity.
C3850-NM-4-10G is a switch uplink expansion module, not a standalone switch, router, or transceiver. It installs into the network module slot of supported Cisco Catalyst 3850 switches and provides modular SFP+ uplink connectivity. Separate Cisco-compatible SFP or SFP+ transceivers are required to connect fiber or other supported media.
C3850-NM-4-10G sits in the Cisco Catalyst 3850 network module family as the four-port 10G SFP+ uplink option. It is positioned above 1G-only uplink modules and below higher-density or 40G module options, making it suitable for Catalyst 3850 deployments that need several 10G uplinks from an access-layer switch.
C3850-NM-4-10G provides four uplink slots for 10 Gigabit Ethernet SFP+ connectivity on supported Catalyst 3850 switches. Cisco documentation also notes that the SFP+ interfaces support both 10 Gigabit Ethernet and Gigabit Ethernet operation, allowing teams to use suitable 1G SFP or 10G SFP+ optics according to the uplink design.
C3850-NM-4-10G uses SFP+ module slots for uplink connectivity. The actual connector presented to the network depends on the installed optical transceiver or DAC cable, such as LC fiber connectors on many Cisco SFP+ optics. Buyers should match the optic type, fiber mode, reach, and upstream switch interface before ordering.
C3850-NM-4-10G supports 10 Gigabit Ethernet SFP+ uplinks and also supports Gigabit Ethernet operation with appropriate SFP modules. Cisco notes that SFP+ interfaces support both 10G and 1G ports, which helps teams migrate from existing 1G fiber uplinks to 10G uplinks while retaining compatible Catalyst 3850 hardware.
C3850-NM-4-10G does not provide PoE because it is an uplink network module rather than an access-port line card. PoE support remains a function of the base Catalyst 3850 switch model and installed power supplies. The module’s role is to move uplink traffic over SFP or SFP+ connections toward distribution or aggregation switches.
C3850-NM-4-10G does not add a separate Layer 2 or Layer 3 feature license by itself. Switching, routing, policy, and management capabilities come from the Catalyst 3850 switch hardware, Cisco IOS XE software image, and license level. The module supplies the physical 1G or 10G uplink interfaces used by those configured services.
C3850-NM-4-10G works in Catalyst 3850 deployments where the switch stack uses compatible StackWise hardware, but the network module itself is not the stacking component. It provides uplinks from a switch or stack member toward upstream devices. Stack behavior, member roles, and control plane operation remain functions of the Catalyst 3850 switch stack.
C3850-NM-4-10G is used to add high-speed uplink capacity to supported Catalyst 3850 switches. Typical roles include access-to-distribution uplinks, fiber handoffs between wiring closets, server access uplinks, or aggregation connections where four 10G interfaces give the switch enough bandwidth for endpoint, wireless, or VLAN trunk traffic.
C3850-NM-4-10G suits small to midsize enterprise closets, campus access stacks, and aggregation points that need more than 1G uplinks but do not require 40G uplink modules. It is commonly selected when a Catalyst 3850 switch already has enough access ports and only the upstream bandwidth needs upgrading.
C3850-NM-4-10G suits uplink traffic from workstations, IP phones, access points, cameras, and other endpoints connected to Catalyst 3850 access switches. The four 10G SFP+ ports support higher-capacity trunks, EtherChannel designs, routed uplinks, and migration from 1G fiber uplinks where traffic growth has created bottlenecks.
C3850-NM-4-10G is useful in Catalyst 3850 stack designs where uplink capacity must match the number of endpoints served by the stack. Network teams place uplinks on selected stack members for redundancy, aggregate links with EtherChannel where supported, and connect the closet stack to distribution switches over 10G fiber.
C3850-NM-4-10G is designed for supported Cisco Catalyst 3850 Series switches. Cisco’s compatibility notes identify support on selected Catalyst 3850 platforms, including 48-port Gigabit Ethernet models and 12-port or higher 10G models in the current data sheet. Buyers should verify the exact base switch PID and software release before ordering.
C3850-NM-4-10G uses Cisco-compatible SFP and SFP+ transceivers selected for the required speed, media, and reach. Common design checks include 1G versus 10G operation, multimode or single-mode fiber, LC connector type, distance rating, and upstream switch compatibility. The module itself does not include optics unless sold as a bundle.
C3850-NM-4-10G operates as part of the Catalyst 3850 switch running Cisco IOS XE. Interfaces appear as switch uplink ports and are configured through the normal Catalyst CLI and management workflows. VLAN trunks, routed ports, port channels, monitoring, and policy settings depend on the switch configuration and installed software license.
C3850-NM-4-10G uplinks may connect to Catalyst 9300, Catalyst 9500, Nexus, or other switches when both sides use compatible 1G or 10G transceivers, fiber type, and interface settings. The module belongs physically to the Catalyst 3850, while the network link follows standard Ethernet interoperability and the chosen optical specifications.
C3850-NM-4-10G provides four SFP+ uplink slots for 10G operation, while C3850-NM-4-1G provides four 1G SFP slots only. C3850-NM-4-10G is the better fit where distribution uplinks need 10G bandwidth. C3850-NM-4-1G suits lower-cost designs that only require Gigabit Ethernet fiber uplinks.
C3850-NM-4-10G offers four 10G-capable SFP+ uplinks, while C3850-NM-2-10G provides fewer 10G-capable uplink positions in the same Catalyst 3850 module family. C3850-NM-4-10G is preferred when the design needs more 10G trunks, redundant uplinks, or additional port-channel members from the access layer.
C3850-NM-4-10G provides four 10G SFP+ uplinks, while C3850-NM-8-10G provides eight 10G SFP+ uplinks for higher-density Catalyst 3850 models and supported platforms. C3850-NM-4-10G fits standard four-uplink access designs, while C3850-NM-8-10G is chosen when the switch model and traffic plan require more 10G interfaces.
C3850-NM-4-10G is a four-port 10G SFP+ module, while C3850-NM-2-40G targets 40G uplink designs with two higher-speed ports on supported Catalyst 3850 platforms. C3850-NM-4-10G suits multiple 10G fiber links, while C3850-NM-2-40G suits aggregation designs that have compatible 40G optics and upstream interfaces.
C3850-NM-4-10G is commonly sourced in refurbished condition, with new or unused units depending on market availability. ORM Systems lists enterprise hardware in new and refurbished supply channels where available. Buyers should confirm current condition, packaging, warranty term, and included accessories before placing an order for this Catalyst 3850 module.
C3850-NM-4-10G pricing depends on condition, quantity, warranty term, and current supply. Refurbished units usually price differently from sealed or unused stock. A quote from ORM Systems gives the current price for the required quantity and confirms whether optics, cables, or only the bare Catalyst 3850 network module are included.
C3850-NM-4-10G belongs to the Cisco Catalyst 3850 generation, which is widely treated as a mature or legacy switching platform. Availability is often driven by refurbished, surplus, and remaining channel stock rather than standard new production. Buyers maintaining Catalyst 3850 estates should verify supply before planning a large refresh or spares purchase.
Lead time for C3850-NM-4-10G depends on stock position, testing status, quantity, and destination. Refurbished enterprise modules may require inspection and functional testing before dispatch. ORM Systems can quote current lead times for single modules, matched spares, or larger rollout quantities once the required condition and delivery location are known.
Bulk pricing may be available for C3850-NM-4-10G when multiple modules are ordered for spares, access closet upgrades, or multi-site Catalyst 3850 projects. Quantity, condition, warranty coverage, and sourcing urgency affect the final price. ORM Systems can prepare volume pricing for IT teams standardising on the same module across several switches.
C3850-NM-4-10G may be supplied with warranty coverage from ORM Systems, with the exact term depending on condition, stock source, and quotation details. Buyers should confirm the warranty period, replacement process, and whether optics or accessories are covered separately. Warranty clarity is especially important when purchasing legacy Catalyst 3850 expansion hardware.
Refurbished C3850-NM-4-10G modules should be functionally tested before dispatch to confirm module recognition, port operation, and physical condition. Testing reduces the risk of receiving a module that fails during installation in a Catalyst 3850 switch. Buyers should request confirmation of testing, serial details, condition grading, and warranty coverage on the quote.
C3850-NM-4-10G operates within Cisco Catalyst 3850 Ethernet switching deployments and uses standard 1G or 10G Ethernet transceiver interfaces. Compliance and regulatory characteristics are normally tied to the Catalyst 3850 switch platform and installed optics. Buyers should match supported Cisco transceivers, fiber standards, and site cabling requirements for the intended uplink design.
C3850-NM-4-10G installs into the network module slot of a supported Cisco Catalyst 3850 switch. The switch should be powered down or handled according to Cisco’s installation guidance, the module seated securely, and compatible SFP or SFP+ optics inserted after installation. Interface status should then be verified in Cisco IOS XE.
C3850-NM-4-10G does not normally require a separate module license for the physical uplink ports. Feature behavior such as routed access, advanced policy, or management capabilities depends on the Catalyst 3850 switch software image and license level. Buyers should verify the switch license, IOS XE version, and intended configuration before deployment.
C3850-NM-4-10G usually requires compatible SFP or SFP+ transceivers, fiber patch leads or DAC cables, and an upstream switch with matching interfaces. The module itself supplies the slots, not the optical media. Buyers should confirm whether the order includes only the network module or a complete uplink kit with optics and cabling.
C3850-NM-4-10G can be purchased in the UK through ORM Systems for Catalyst 3850 upgrades, replacements, and spare stock planning. The quoting process confirms current price, condition, warranty term, and availability. UK buyers should share the base switch model and required optics so the module is matched to the deployment.
ORM Systems can support international enquiries for C3850-NM-4-10G depending on destination, stock location, export requirements, and shipping method. International buyers should confirm delivery address, required condition, quantity, and any documentation needs during quotation. Lead time and freight cost are confirmed before dispatch for cross-border Catalyst 3850 hardware orders.
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