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NXM-X16C
Nexus 100G Line Expansion Module
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NXM-X16C is a high-performance 10Gbps Ethernet network card designed to deliver reliable, high-speed connectivity across modern networking environments. It features an RJ-45 connector and PCIe form factor, making it a versatile solution for data centers that require seamless integration with routers, switches, and servers while supporting essential protocols such as TCP/IP and iSCSI.
NXM-X16C is engineered for use in scenarios that demand robust network interface upgrades and high-speed data transmission, ensuring secure and efficient communication within virtualized and high-density server environments. Its design optimizes for auto-negotiation, wake-on-LAN, and jumbo frames, making it an ideal choice for expanding data center capacity and connecting to advanced network infrastructures.
NXM-X16C price is $3,139.00, a 47.4% saving from the Cisco list price of $5,968.00. NXM-X16C is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for NXM-X16C for additional pricing. Browse the full Cisco Nexus 3000 Switch Modules & Cards series or explore all Cisco products.
Scenario: A cloud provider is experiencing exponential north-south traffic growth across its spine-leaf fabric. By deploying the NXM-X16C-Nexus 100G Line Expansion Module in Nexus 9500 series switches, operators gain sixteen additional QSFP28 100G uplinks in a single slot. Outcome: 2.56 Tbit/s of non-blocking bandwidth expansion, 50% higher port density per RU, and seamless scaling of compute and storage clusters with sub-microsecond latency—driving improved application performance and reduced congestion.
Scenario: An enterprise AI lab needs ultra-low latency and high-capacity links between GPU-accelerated servers for distributed training. Integrating the NXM-X16C into Nexus 9300 switches delivers 1.6 Tbit/s of bi-directional 100G connectivity across 16 ports. Outcome: 40% faster model convergence through optimized throughput, streamlined cable management with breakout optics support, and predictable end-to-end performance—enabling data scientists to reduce iteration time and speed AI innovation.
Scenario: A telecom operator is rolling out edge compute nodes to support 5G mobile backhaul and MEC services. Installing the NXM-X16C-Nexus 100G module in Nexus 9500 edge routers provides sixteen high-density 100G interfaces for cell-site aggregation. Outcome: Simplified architecture with higher port count per line card, 30% lower power per gigabit, and sub-1 ms latency—ensuring SLA-driven performance, expedited service rollouts, and reduced TCO for next-gen mobile services.
To get the detailed certification, please go to the Compliance Center.
 NXM-X16C |  NXM-XBLNK |  NXM-X4D | |
|---|---|---|---|
| Product Type | Network Card | Network Module | Network Module |
| Module Type | Ethernet | Ethernet | Ethernet |
| Data Rate | 10Gbps | 10G | 10Gbps / 40Gbps |
| Connector Type | RJ-45 | SFP+ | SFP+ |
| Supported Protocols | TCP/IP / iSCSI | TCP/IP / iSCSI | TCP/IP / iSCSI |
| Form Factor | PCIe | PCIe | PCIe |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Arista / Dell / HP | Cisco / Juniper / Arista / Dell / HP | Cisco / Juniper / Arista / Dell / HP |
| Max Speed | 10Gbps | 10Gbps | 40Gbps |
| Supported Features | Auto-negotiation / Wake-on-LAN / Jumbo Frames | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS |
| Power Consumption | 12W | 7W | 15W |
| Interface Ports | Ethernet | SFP+ | Ethernet |
| Expansion Slots | N/A | N/A | N/A |
| Product Name | NXM-X16C Network Card | NXM-XBLNK 10G Ethernet Module | NXM-X4D High Performance Ethernet Module |
| Height | 0.7 inches | 1.5 inches | 0.5 inches |
| Width | 3.4 inches | 3.4 inches | 3.0 inches |
| Depth | 4.5 inches | 0.5 inches | 4.0 inches |
| Weight | 0.5 lbs | 0.2 lbs | 1.2 lbs |
The Nexus 100G Line Expansion Module has been a great solution for our network. It provides high-speed connectivity and supports our growing bandwidth needs.
We installed the NXM-X16C, and it has been fantastic. The 100G performance is top-notch, ensuring that our network operates at peak efficiency.
The NXM-X16C module provides fast, reliable performance. It's been essential for meeting the demands of our high-capacity network.
We rely on the NXM-X16C for fast, reliable 100G connectivity. It's easy to install and supports our large-scale network applications.
The NXM-X16C has been great for expanding our network. It offers excellent performance, providing fast and stable data transfer across our system.
The Cisco Nexus NXM-X16C is a high-density, 16-port 100 Gigabit Ethernet line expansion module designed for Cisco Nexus 9500 Series switches, delivering low-latency, high-throughput connectivity for data center networks.
The NXM-X16C is fully compatible with Cisco Nexus 9500 Series chassis (N9K-9504, N9K-9508 and N9K-9516), providing seamless integration and unified management under Cisco NX-OS.
The module offers 16 fixed QSFP28 ports, each supporting 100 Gbps line rate, for a total of 1.6 Tbps of full-duplex bandwidth.
NXM-X16C supports a wide range of QSFP28 pluggable transceivers, including SR4, LR4, ER4, and DAC/AOC twinax cables, enabling distances from 5 m (DAC) up to 40 km (ER4).