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C4KX-NM-8SFP+
8PORT 10GBE NETWORK MODULE FOR CATALYST 4500-X
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C4KX-NM-8SFP+ is a high-performance networking module engineered to deliver robust 10Gbps connectivity through its eight integrated SFP+ ports. Designed for seamless integration into enterprise routers, switches, and servers, this modular card leverages SFP+ connectors to support high-speed optical or copper connectivity while operating over industry-standard protocols such as TCP/IP and iSCSI.
Optimized for data center expansion and next-generation network upgrades, the C4KX-NM-8SFP+ module offers reliable performance under demanding operational conditions with an operating temperature range of 0 to 70°C. Its compact, modular form factor, along with features like jumbo frame support and QoS, makes it an ideal choice for upgrading server network interfaces and interfacing with high-speed networks in mission-critical environments.
C4KX-NM-8SFP+ price is $1,861.44, a 77% saving from the Cisco list price of $8,093.20. C4KX-NM-8SFP+ is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C4KX-NM-8SFP+ for additional pricing. Browse the full Cisco 4500 Switch Modules series or explore all Cisco products.
In a virtualized data center, IT teams deploy the C4KX-NM-8SFP+-8PORT 10GbE network module in Catalyst 4500-X chassis to aggregate top-of-rack leaf switches. This high-density, low-latency uplink architecture delivers 80 Gbps of redundant bandwidth, enabling seamless live migration, faster backup windows, and predictable performance SLAs.
A university network operations team installs the 8-port 10 Gigabit Ethernet module in its Catalyst 4500-X distribution switches to support multi-gigabit Wi-Fi, VoIP, and multimedia streaming. The solution provides line-rate throughput, enhanced QoS, and simplified VLAN segmentation—resulting in 50% reduction in latency and 40% increase in concurrent client capacity.
A financial services firm uses the C4KX-NM-8SFP+-8PORT module to connect remote branch Catalyst 4500-X units over DWDM for DMVPN backhaul. With hardened SFP+ ports and hot-swappable design, this deployment ensures 10 Gbps resiliency, sub-millisecond failover, and centralized security policy enforcement—achieving 99.99% WAN availability and consistent application performance.
To get the detailed certification, please go to the Compliance Center.
 C4KX-NM-8SFP+ |  WS-X45-SUP8-E |  WS-X4424-GB-RJ45 |  WS-X4612-SFP-E |  WS-X4515 | |
|---|---|---|---|---|---|
| Product Type | Network Module / Network Card | Supervisor Engine | Network Module / Network Card | Network Module | Network Module / Network Card |
| Module Type | SFP+ | Supervisor Module | Ethernet Module | SFP Ethernet Module | Ethernet |
| Data Rate | 10Gbps | N/A | 1Gbps | 1Gbps | 10G |
| Connector Type | SFP+ | N/A | RJ-45 | SFP | SFP+ |
| Supported Protocols | TCP/IP, iSCSI | TCP/IP | TCP/IP, Ethernet | TCP/IP | TCP/IP |
| Form Factor | Modular | Modular | Modular | Modular | PCIe |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 50°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 70°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V / 5V | 3.3V | N/A | 3.3V |
| Compatibility | Cisco, Juniper, Arista, Dell, HP | Cisco Catalyst Series | Cisco | Cisco | Cisco |
| Max Speed | 10Gbps | N/A | 1Gbps | 1Gbps | 10Gbps |
| Supported Features | Jumbo Frames, QoS | High Availability, Redundancy, Advanced Routing | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS |
| Power Consumption | 6.5W | N/A | N/A | N/A | 15W |
| Interface Ports | SFP+ | N/A | Ethernet | SFP | Ethernet |
| Expansion Slots | N/A | N/A | N/A | N/A | N/A |
| Product Name | C4KX-NM-8SFP+ | WS-X45-SUP8-E | WS-X4424-GB-RJ45 | WS-X4612-SFP-E | WS-X4515 High-Speed Network Module |
| Height | 0.3 inches | N/A | N/A | N/A | N/A |
| Width | 3.5 inches | N/A | N/A | N/A | N/A |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Weight | 0.8 lbs | N/A | N/A | N/A | N/A |
The C4KX-NM-8SFP+ module provides exceptional flexibility. It offers fast, stable connections and supports high-density networks without any issues.
The C4KX-NM-8SFP+ module is a great addition to our network. It delivers reliable, high-speed performance, even during peak usage.
The C4KX-NM-8SFP+ module integrates seamlessly. It provides fast and stable connections and handles our high-traffic needs with ease.
The C4KX-NM-8SFP+ module is perfect for expanding our network. It offers exceptional performance and ensures reliable connectivity across multiple devices.
The C4KX-NM-8SFP+ module delivers excellent performance. It ensures smooth, uninterrupted connections even with a high volume of traffic.
The C4KX-NM-8SFP+ is an 8-port 10 Gigabit Ethernet SFP+ module designed for Cisco Catalyst 4500-X Series switches to deliver high-density 10GbE uplinks.
The module is fully compatible with all Cisco Catalyst 4500-X Series switches running Cisco IOS XE Software.
It provides eight independent 10 Gigabit Ethernet SFP+ ports for high-speed uplink connectivity.
It supports Cisco 10GBASE-SR, 10GBASE-LR, and Direct Attach Copper (DAC) SFP+ transceivers.
No, the module operates under the base Catalyst 4500-X license without requiring extra feature or port licenses.
Slide the module into an available Network Module slot, secure it with the captive screws, then power up and configure via CLI or Cisco Prime.
Yes, it supports hot-insertion and removal without powering down the Catalyst 4500-X chassis.
It delivers up to 160 Gbps of aggregate switching bandwidth in the Catalyst 4500-X chassis.
No, each port on the C4KX-NM-8SFP+ supports only SFP+ modules; mixing with SFP ports is not supported.
The module draws up to 25 W from the switch’s internal power supply for full operation.
Yes, it fully integrates with Catalyst 4500-X switching, routing, QoS, and advanced service capabilities.
It operates from 0 °C to 45 °C at 10–90% non-condensing relative humidity.
Yes, it supports IEEE 802.3ad Link Aggregation Control Protocol (LACP) for port-channel configurations.
Cisco offers a limited lifetime hardware warranty plus 90 days of complimentary software updates and TAC support.
Yes, it is compatible with Cisco 10 Gbit/s SFP+ Direct Attach Copper twinax cables up to 7 meters.
Use the IOS XE commands ‘show module’ and ‘show interface transceiver’ to verify module status and optical diagnostics.