P42045-B21 HPE Mellanox MCX631102AS-ADAT Ethernet 10/25GB 2-Port SFP28 Adapter

Enhanced Product Overview

The HPE P42045-B21 dual‑port network adapter delivers flexible connectivity, multi‑speed Ethernet support, and modern PCIe compliance for demanding enterprise infrastructures. This plug‑in card is engineered to boost throughput, streamline data movement, and maintain compatibility with next‑generation server platforms.

General Specifications

• Manufacturer: HPE
• Part Number: P42045-B21
• Product Type: 2 Ports Network Adapter

Technical Specifications

• Bus Interface: PCI Express 4.0 x8
• Card Format: Compact plug‑in design
• Supported Revisions: PCIe 3.0 and PCIe 4.0
• Bandwidth Efficiency: Optimized for high‑speed data workloads
• Port Type: Dual SFP28 cages
• Supported Speeds: Gigabit Ethernet, 10GbE, 25GbE
• Connectivity Mode: Wired Ethernet

Data Link Protocols

• GigE
• 10 GigE
• 25 Gigabit LAN

Transport Protocol Support

• TCP/IP
• UDP/IP
• iSCSI

Performance Attributes

• High‑efficiency packet handling
• Optimized transport for storage and virtualization traffic
• Reliable multi‑speed switching for dynamic environments

IEEE Protocol Compatibility

• IEEE 802.1Q (VLAN tagging)
• IEEE 802.1P (QoS prioritization)
• IEEE 802.3ad (LACP)
• IEEE 802.3ae
• IEEE 802.3ap
• IEEE 802.3az
• IEEE 802.1Qbb
• IEEE 802.1Qaz
• IEEE 1149.1
• IEEE 802.1Qbg
• IEEE 1588v2 (Precision Time Protocol)
• IEEE 802.3by
• IEEE 1149.6

Additional Standards

• OCP 3.0 compliance for modular server ecosystems

Supported Protocols

• TCP/IP for general networking
• UDP/IP for lightweight transport
• iSCSI for storage connectivity

Key Advantages

• Flexible multi‑speed Ethernet performance
• Compact footprint for dense server deployments
• Extensive IEEE compliance for interoperability
• Modern PCIe 4.0 architecture
• Dual SFP28 ports for scalable connectivity

HPE P42045-B21 Ethernet 2-Ports SFP28 Adapter

The HPE P42045-B21 Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 Adapter is a high-performance networking solution designed to provide enterprise servers with advanced connectivity, increased bandwidth capacity, and efficient data transmission capabilities. This adapter belongs to the category of high-speed Ethernet network interface cards (NICs) engineered for modern data centers, cloud environments, virtualization platforms, and demanding enterprise applications. Built around Mellanox networking technology, this adapter delivers flexible Ethernet connectivity by supporting both 10 Gigabit Ethernet and 25 Gigabit Ethernet speeds through dual SFP28 ports.

Designed for integration with compatible HPE server platforms, the HPE P42045-B21 network adapter provides organizations with a reliable method to upgrade their network infrastructure while improving throughput, reducing latency, and optimizing server communication. The adapter combines advanced Ethernet capabilities with efficient hardware architecture to support workloads that require fast and consistent network performance, including virtualization, high-performance computing, software-defined networking, database applications, storage networking, and large-scale cloud operations.

The Mellanox MCX631102AS-ADAT adapter utilizes SFP28 connectivity, enabling compatibility with a wide range of optical and direct attach cable solutions. Its dual-port design provides additional networking flexibility, allowing servers to connect to multiple network paths, improve redundancy, or support higher aggregate bandwidth requirements. With support for modern Ethernet standards, this adapter helps organizations build scalable and future-ready network infrastructures.

High-Speed 10Gb and 25Gb Ethernet Connectivity

The HPE P42045-B21 Mellanox MCX631102AS-ADAT Ethernet Adapter is designed to deliver high-speed network communication through two SFP28 ports capable of supporting 10GbE and 25GbE connections. This flexible speed capability allows businesses to deploy the adapter in various networking environments without requiring separate hardware for different bandwidth requirements.

25 Gigabit Ethernet technology provides a significant improvement over traditional 10 Gigabit Ethernet solutions by increasing available bandwidth while maintaining efficient power consumption and infrastructure compatibility. The ability to operate at both 10Gb and 25Gb speeds makes this adapter suitable for organizations transitioning from legacy networking environments toward higher-performance data center architectures.

Dual-Port SFP28 Interface

The dual-port SFP28 interface configuration provides enhanced connectivity options for enterprise server deployments. Each port can support high-speed Ethernet communication using compatible SFP28 transceiver modules or direct attach cables, allowing administrators to customize connectivity based on distance, performance requirements, and infrastructure design.

Multiple port configurations enable improved network flexibility by supporting separate connections for production networks, management environments, storage traffic, or virtualized workloads. The two-port architecture also allows network administrators to implement link aggregation, redundancy strategies, and load distribution techniques to maximize availability and efficiency.

Flexible Cable and Transceiver Compatibility

SFP28 technology provides broad compatibility with modern data center cabling solutions. The HPE P42045-B21 adapter can be deployed with suitable optical transceivers for longer-distance networking or direct attach cables for short-range, cost-effective server-to-switch connections. This flexibility helps organizations optimize network deployments according to their physical infrastructure requirements.

The use of standardized SFP28 interfaces simplifies network upgrades because existing data center environments can adopt higher-speed connectivity without completely replacing cabling systems. This makes the adapter an effective choice for organizations seeking a scalable Ethernet solution.

Advanced Mellanox Networking Architecture

The Mellanox MCX631102AS-ADAT Ethernet Adapter incorporates advanced networking technologies developed to support modern enterprise workloads. Mellanox adapters are recognized for delivering efficient packet processing, low-latency communication, and reliable data transfer performance across demanding computing environments.

The adapter architecture is optimized to handle intensive network traffic while reducing processing overhead on the host server. By improving network efficiency, the adapter allows server resources to remain available for applications rather than being heavily consumed by network operations. This capability is especially valuable in environments running virtualization platforms, analytics workloads, distributed applications, and high-volume data services.

Optimized Performance for Enterprise Data Centers

Enterprise data centers require network adapters capable of maintaining consistent performance under heavy workloads. The HPE P42045-B21 Mellanox Ethernet Adapter is designed to provide dependable connectivity for servers handling large amounts of network traffic.

With support for 25Gb Ethernet speeds, the adapter enables faster movement of data between servers, switches, storage systems, and network resources. Higher bandwidth helps reduce congestion and improves application responsiveness, especially for workloads involving large file transfers, real-time processing, and distributed computing operations.

Low-Latency Network Communication

Low latency is a critical requirement for many modern applications. The Mellanox MCX631102AS-ADAT adapter is engineered to support efficient packet handling and fast communication between connected systems. Reduced latency helps improve performance in applications where rapid data exchange is essential.

High-performance networking enables faster response times for databases, virtualization environments, cloud platforms, and enterprise applications. By providing efficient communication between servers and network infrastructure, the adapter contributes to smoother application operation and improved user experiences.

Efficient Server Resource Utilization

Network adapters play an important role in reducing the workload placed on server processors. The HPE P42045-B21 adapter incorporates hardware-based networking features that help optimize packet processing and improve overall system efficiency.

By handling network operations efficiently, the adapter allows server CPUs and memory resources to focus on application workloads. This improved resource utilization can help organizations achieve better performance from existing server investments while supporting demanding enterprise applications.

Enterprise Network Interface Card Applications

The HPE P42045-B21 Mellanox MCX631102AS-ADAT Ethernet Adapter is suitable for a wide range of enterprise networking applications. Its combination of dual-port connectivity, high-speed Ethernet support, and scalable architecture makes it a valuable component for modern server environments.

Virtualization and Cloud Infrastructure

Virtualized environments require powerful networking solutions to support communication between virtual machines, physical servers, and storage resources. The HPE P42045-B21 adapter provides the bandwidth and flexibility needed for virtualization platforms by enabling faster network connections and efficient traffic management.

Cloud computing environments benefit from high-speed Ethernet adapters because they rely on constant data movement between compute nodes, storage systems, and network services. The adapter helps create a reliable foundation for private cloud deployments, enterprise virtualization clusters, and scalable infrastructure environments.

Data-Intensive Workload Compatibility

Modern enterprises generate and process increasing volumes of information, requiring network components capable of handling demanding workloads. The HPE P42045-B21 adapter supports environments where rapid data transfer and dependable connectivity are essential.

Applications such as big data analytics, scientific computing, enterprise databases, content delivery platforms, and distributed storage systems can benefit from improved network performance provided by 10GbE and 25GbE connectivity.

Storage Networking Environments

High-speed Ethernet connectivity is increasingly important for storage-related applications. The HPE Mellanox adapter supports network architectures where fast communication between servers and storage resources is required.

Improved bandwidth availability helps reduce delays during data access operations and supports efficient movement of large datasets. This makes the adapter suitable for organizations deploying network-attached storage solutions, software-defined storage platforms, and other high-performance storage environments.

Compatibility and Integration with HPE Server Platforms

The HPE P42045-B21 Mellanox MCX631102AS-ADAT Ethernet Adapter is designed for integration with supported HPE server systems. It provides organizations with a reliable networking upgrade option for compatible enterprise servers requiring advanced Ethernet connectivity.

HPE networking accessories are developed to meet enterprise standards for compatibility, reliability, and performance. Proper integration between server hardware, operating systems, and networking components helps ensure stable operation and efficient infrastructure management.

Enterprise-Class Reliability and Deployment

Reliability is a key requirement for business-critical networking environments. The HPE P42045-B21 adapter is designed to provide consistent operation in enterprise data centers where network availability directly impacts application performance and business operations.

The adapter supports professional server deployments requiring dependable communication between systems. Its enterprise-focused design makes it suitable for organizations building reliable and scalable network architectures.

Streamlined Infrastructure Upgrades

Organizations upgrading from older networking technologies can use the HPE P42045-B21 adapter to introduce higher-speed Ethernet capabilities into existing server environments. The adapter provides a practical pathway toward improved bandwidth without requiring complete infrastructure replacement.

By supporting both 10GbE and 25GbE connectivity, the adapter allows businesses to gradually transition toward faster networking standards while maintaining compatibility with existing data center designs.

Modern Data Center Networking

The HPE P42045-B21 Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 Adapter represents a modern networking solution designed for organizations that require efficient, scalable, and high-performance Ethernet connectivity. Its advanced capabilities support the evolving requirements of enterprise computing environments.

Through dual SFP28 ports, flexible Ethernet speed support, and Mellanox performance technology, this adapter provides a strong foundation for applications requiring fast and reliable communication. It is designed to enhance server connectivity, improve network efficiency, and support the continued growth of data-intensive enterprise infrastructures.

High-Performance Ethernet Adapter Features and Benefits

Scalable Bandwidth for Growing Infrastructure Needs

The increasing demand for cloud services, virtualization, and data processing requires networking components that can scale alongside business requirements. The HPE P42045-B21 adapter provides bandwidth flexibility through support for both 10GbE and 25GbE connections, enabling organizations to adapt their networks as performance requirements evolve.

Reliable Connectivity for Mission-Critical Operations

Mission-critical applications depend on stable network communication. This Mellanox Ethernet adapter delivers enterprise-grade connectivity designed to support continuous data exchange between servers, switches, and other infrastructure components.

Future-Ready Network Expansion

With modern SFP28 technology and high-speed Ethernet capabilities, the HPE P42045-B21 Mellanox MCX631102AS-ADAT adapter provides a foundation for future network expansion. Organizations can leverage this adapter to create efficient, flexible, and performance-oriented data center environments capable of supporting next-generation workloads.