UCSC-MLOM-C25Q-04 Cisco Quad Port 25GbE PCI-E Network Adapter

Cisco UCSC-MLOM-C25Q-04 Quad Port 25GbE PCI-E Adapter

The Cisco UCSC-MLOM-C25Q-04 Quad Port 25GbE PCI-E Network Adapter is a high-performance enterprise networking solution designed for modern data centers, virtualization environments, and cloud-optimized infrastructures. Built, this advanced multi-port adapter delivers exceptional throughput, low latency, and scalable connectivity for mission-critical workloads.

Engineered for next-generation server architecture, this network interface card (NIC) enhances bandwidth efficiency and supports high-density deployments where fast, reliable data transmission is essential.

General Information

• Manufacturer: Cisco
• Part Number: UCSC-MLOM-C25Q-04
• Product Type: Network Adapter
• Interface Type: Multi-Lane High-Speed Ethernet Adapter

Technical Specifications

• Interface: PCI-E 3.0 x16
• Ports: 4 x 25GbE
• Connector Type: SFP28
• Ethernet Standard: 25GBase-X

Architectural Advantages

• Optimized for virtualization, cloud computing, and high-density workloads
• Low-latency packet processing for real-time applications
• Improved network scalability for enterprise data centers
• Enhanced throughput for storage and compute-heavy tasks

Port Configuration Benefits

• 4 x 25GbE high-speed network interfaces
• Load balancing across multiple links
• Redundant network paths for fault tolerance
• High throughput for clustered applications

Optical Networking Advantages

• Support for fiber-optic transceivers
• Scalable deployment across data center racks
• High signal integrity with minimal interference
• Energy-efficient high-speed communication

Supported Cisco UCS Server Models

• Cisco UCS C220 M5
• Cisco UCS C220 M5SN
• Cisco UCS C220 M5SX
• Cisco UCS C240 M5
• SmartPlay Select C220 M5 Series
• SmartPlay Select C240 M5 Series

Operational Benefits

• Accelerated data throughput for virtual machines
• Improved network traffic distribution
• Reduced latency in high-performance computing (HPC)
• Efficient handling of east-west data center traffic

Overview of Cisco UCSC-MLOM-C25Q-04 Quad Port Adapter

The Cisco UCSC-MLOM-C25Q-04 Quad Port 25GbE PCI-E Network Adapter is a high-performance data center networking component engineered to deliver ultra-fast, low-latency connectivity for modern enterprise infrastructures. this advanced network adapter belongs to a specialized class of modular LAN-on-motherboard (MLOM) solutions optimized for Cisco UCS (Unified Computing System) environments. It is built to support demanding workloads such as virtualization clusters, cloud-native applications, high-frequency trading systems, and large-scale storage networking where bandwidth density and deterministic latency are critical.

As data centers evolve toward higher throughput and distributed computing models, the need for scalable 25 Gigabit Ethernet (25GbE) connectivity becomes essential. This quad-port PCI Express network adapter addresses that requirement by providing four independent 25GbE interfaces, enabling aggregated bandwidth capacity and improved network segmentation for enterprise workloads.

High-Speed 25GbE Networking Architecture

Next-Generation Data Center Connectivity

The Cisco UCSC-MLOM-C25Q-04 network adapter is built around the 25GbE Ethernet standard, which is increasingly becoming the baseline for modern hyperscale and enterprise data centers. This standard bridges the gap between legacy 10GbE systems and high-end 40/100GbE infrastructures, providing a cost-effective yet powerful upgrade path.

Each of the four ports operates independently, allowing administrators to configure multiple traffic paths for redundancy, load balancing, and optimized workload distribution. This multi-port architecture enhances resiliency and ensures uninterrupted service in mission-critical environments.

Bandwidth Aggregation and Throughput Efficiency

By combining four 25GbE lanes, the adapter delivers an aggregated theoretical bandwidth of 100Gbps per device. This level of throughput is essential for applications such as distributed storage replication, virtualization migration, and high-performance computing clusters where data movement must be both rapid and reliable.

The design minimizes packet loss and maximizes throughput efficiency through hardware-based offloading mechanisms that reduce CPU overhead. This allows server processors to focus on application-level tasks rather than network packet processing.

Low Latency Packet Processing

Low latency is a defining feature of this adapter class. The Cisco UCSC-MLOM-C25Q-04 incorporates advanced queuing mechanisms and optimized packet scheduling to ensure that data flows efficiently across virtual and physical networks. This is especially important for latency-sensitive workloads such as financial analytics, real-time monitoring systems, and AI-driven inference pipelines.

PCI Express Integration and System Compatibility

High-Bandwidth PCIe Interface Design

The adapter utilizes a PCI Express interface designed for high-throughput communication between the network controller and the host system. This ensures that the full bandwidth potential of the 25GbE ports can be realized without bottlenecks at the system bus level.

The PCIe architecture supports efficient data streaming and parallel processing, which is critical for enterprise workloads that involve simultaneous data ingestion and transmission across multiple channels.

Server Integration in UCS Environments

As a modular LAN-on-motherboard component, the Cisco UCSC-MLOM-C25Q-04 integrates seamlessly into Cisco UCS servers. This tight integration allows for simplified deployment, centralized management, and consistent firmware updates across the entire compute infrastructure.

The adapter is designed to work in harmony with Cisco UCS Manager, enabling administrators to configure network profiles, VLAN segmentation, and QoS policies directly from a unified interface.

Quad-Port Network Design and Traffic Optimization

Multi-Interface Network Distribution

The quad-port configuration provides a significant advantage in environments where network traffic must be segmented or distributed across multiple paths. Each port can be assigned to different virtual LANs, storage networks, or application tiers, improving both security and performance isolation.

This design is particularly effective in cloud computing infrastructures where multi-tenant environments require strict traffic separation and predictable performance.

Redundancy and Failover Capabilities

Network redundancy is a critical requirement for enterprise systems. The Cisco UCSC-MLOM-C25Q-04 supports failover configurations that ensure uninterrupted connectivity even in the event of port or link failure. Traffic can be dynamically rerouted across available interfaces without service interruption.

This redundancy mechanism enhances system reliability and reduces downtime in mission-critical applications such as ERP systems, database clusters, and virtual desktop infrastructures.

Enterprise Data Center Applications

Virtualization and Cloud Infrastructure

The Cisco UCSC-MLOM-C25Q-04 is optimized for virtualization environments such as VMware, Hyper-V, and KVM-based systems. These platforms require high network throughput to support virtual machine migration, distributed storage access, and multi-tenant networking.

The adapter’s high port density and bandwidth capacity make it suitable for cloud service providers and enterprise private cloud deployments where scalability and performance are essential.

Storage Networking and NVMe over Fabrics

Modern storage architectures increasingly rely on high-speed Ethernet connections to support NVMe over Fabrics (NVMe-oF). The 25GbE interfaces on this adapter provide the necessary bandwidth to handle high-speed storage traffic with minimal latency.

This enables faster data access, reduced I/O bottlenecks, and improved performance for database-intensive workloads and large-scale storage arrays.

Big Data and Analytics Workloads

Data-intensive applications such as Hadoop clusters, Spark processing frameworks, and AI/ML pipelines benefit significantly from the high-throughput capabilities of this adapter. Large datasets can be transferred rapidly between compute nodes, reducing processing time and improving analytical efficiency.

Performance Optimization Features

Hardware Offloading Technologies

The adapter incorporates advanced hardware offloading features that reduce CPU utilization by handling network processing tasks directly on the adapter. This includes checksum offloading, segmentation offloading, and packet classification.

These optimizations allow server resources to be allocated more efficiently, improving application performance and system scalability.

Quality of Service and Traffic Prioritization

Quality of Service (QoS) features ensure that critical network traffic is prioritized appropriately. This is particularly important in environments where mixed workloads compete for bandwidth, such as voice, video, and data applications operating simultaneously.

Traffic shaping and prioritization mechanisms ensure consistent performance across all connected services.

Security and Network Isolation

Advanced Network Segmentation

The Cisco UCSC-MLOM-C25Q-04 supports advanced network segmentation techniques that enhance security and operational control. By isolating traffic streams across multiple ports and virtual interfaces, organizations can reduce exposure to network threats and improve compliance with security policies.

Secure Data Transmission Protocol Support

The adapter supports secure communication protocols and encryption-ready data handling mechanisms that ensure sensitive information remains protected during transmission. This is essential for industries such as healthcare, finance, and government sectors where data integrity is critical.

Enterprise Compliance Alignment

Organizations deploying this adapter can align network infrastructure with regulatory compliance requirements by enforcing strict traffic control policies and maintaining detailed network segmentation strategies.

Scalability and Future-Ready Networking

Support for Evolving Data Center Standards

As network infrastructures continue to evolve, the Cisco UCSC-MLOM-C25Q-04 provides a scalable foundation for future upgrades. Its 25GbE architecture ensures compatibility with emerging data center technologies and hybrid cloud environments.

This forward-compatible design reduces long-term infrastructure costs by extending the lifecycle of existing server investments while enabling gradual performance upgrades.

Integration with Software-Defined Networking

The adapter is fully compatible with software-defined networking (SDN) environments, allowing administrators to centrally control network behavior through programmable interfaces. This enhances agility and simplifies network management in complex infrastructures.

Automation and Orchestration Support

Modern data centers rely heavily on automation frameworks. The Cisco UCSC-MLOM-C25Q-04 supports integration with orchestration tools that automate provisioning, monitoring, and configuration of network resources, reducing administrative overhead.