647594-B21 HPE 1GB 4-Port 331T PCI-E Ethernet Network Adapter

HPE 647594-B21 Ethernet 1GB 4-Port Network Adapter

The HPE 647594-B21 Ethernet 1Gb 4-Port 331T PCI-E Plug-in Card Network Adapter is a high-performance networking solution designed for enterprise-level servers and data center environments. Engineered by Hewlett Packard Enterprise (HPE), this adapter delivers reliable multi-port connectivity, improved bandwidth efficiency, and stable wired networking performance for mission-critical workloads.

Manufacturer Details

• Brand: HPE (Hewlett Packard Enterprise)
• Part Number: 647594-B21
• Product Category: Ethernet Network Adapter
• Device Type: Multi-port Plug-in Card

Technical Specifications

• Processor: Broadcom BCM5719 controller (1x integrated chipset)
• Bus Interface: PCI Express 2.0 x4
• PCI Specification: PCIe 2.0 compliant
• Form Factor: Low-profile plug-in card

Port Configuration

• 4 x RJ-45 Ethernet ports
• Supports independent channel operation per port
• Designed for high-density server networking

Supported Networking Standards

• Ethernet 10BASE-T
• Fast Ethernet 100BASE-TX
• Gigabit Ethernet 1000BASE-T
• Full backward compatibility for legacy systems

Data Transfer Performance

• Maximum Speed: Up to 1 Gbps per port
• Protocol Support: Ethernet, Fast Ethernet, Gigabit Ethernet
• Optimized for: High-throughput server workloads

Interface Compatibility

• 1 x PCI Express 2.0 x4 slot required
• Standard RJ-45 Ethernet connectivity
• Hot-plug capable in supported server environments

Cabling Support

• Ethernet 10BASE-T cables
• Ethernet 100BASE-TX cables
• Ethernet 1000BASE-T (Gigabit) cables

Performance Advantages

• Multiple ports for load balancing and redundancy
• Enhanced network throughput for data centers
• Reduced CPU overhead with Broadcom BCM5719 chipset

Reliability and Stability

• Enterprise-grade hardware design
• Stable wired connectivity for mission-critical systems
• Low latency communication between network nodes

Common Applications

• Data centers and cloud computing environments
• Virtualization servers and hypervisors
• Enterprise storage networking systems
• High-performance business servers

HPE 647594-B21 Ethernet 1GB 4-Port 331T Adapter Overview

The HPE 647594-B21 Ethernet 1GB 4-Port 331T PCI-E Plug-in Card Network Adapter is a high-performance server networking component engineered for enterprise environments that demand stable, scalable, and efficient network connectivity. Designed by Hewlett Packard Enterprise, this adapter belongs to the advanced class of multi-port Gigabit Ethernet solutions that are widely deployed in data centers, virtualization infrastructures, cloud computing environments, and mission-critical server clusters. With its quad-port architecture, PCI Express interface, and optimized throughput capabilities, this network interface card delivers reliable performance for modern IT workloads requiring consistent data flow and low-latency communication.

Built for compatibility with HPE ProLiant servers and other enterprise-grade systems, the HPE 331T 4-Port Ethernet adapter enhances network density while minimizing hardware footprint. This makes it a preferred choice for organizations aiming to consolidate network hardware while expanding connectivity options within a single server chassis.

Enterprise-Class Networking Performance

The HPE 647594-B21 331T adapter is designed to deliver robust Gigabit Ethernet performance across all four ports simultaneously. Each port supports up to 1Gbps throughput, allowing aggregate bandwidth that significantly improves server-to-switch communication efficiency. This capability is essential for virtualization hosts, database servers, application servers, and storage networking environments where multiple virtual machines or services require parallel network channels.

The architecture of the adapter is optimized to reduce CPU overhead by leveraging advanced offloading technologies. This ensures that packet processing tasks are handled efficiently by the NIC itself, allowing the server processor to focus on application workloads rather than network management tasks. This results in improved system responsiveness and better overall resource utilization.

High Throughput Multi-Port Design

One of the defining characteristics of this network adapter is its four independent Gigabit Ethernet ports. These ports can operate simultaneously, enabling administrators to segment network traffic or aggregate bandwidth based on workload requirements. In high-density server environments, this design reduces the need for multiple single-port NICs, thereby conserving PCIe slots and simplifying hardware configuration.

Each port operates independently, ensuring consistent performance even under heavy traffic conditions. This makes the adapter suitable for load balancing, redundancy configurations, and traffic isolation strategies commonly used in enterprise networking architectures.

PCI Express Interface for Maximum Compatibility

The HPE 331T network adapter utilizes a PCI Express interface, which ensures high-speed communication between the network card and the host system. The PCIe architecture provides scalable bandwidth and low latency, making it ideal for modern server platforms that handle large volumes of data traffic.

This interface also ensures backward compatibility with a wide range of server motherboards, allowing seamless integration into existing infrastructure without requiring major hardware changes. The plug-in design simplifies installation and maintenance, making it suitable for both new deployments and infrastructure upgrades.

Data Center Optimization

In modern data center environments, virtualization plays a critical role in maximizing hardware utilization. The HPE 647594-B21 Ethernet adapter is engineered with virtualization support in mind, allowing multiple virtual machines to efficiently share network resources without performance degradation.

Through features such as virtual machine queuing and intelligent traffic distribution, the adapter ensures fair and optimized bandwidth allocation across workloads. This helps maintain consistent application performance even in heavily virtualized environments.

Enhanced Traffic Management Capabilities

Traffic management is a crucial aspect of enterprise networking, and this adapter is designed to handle complex routing scenarios with ease. It supports advanced packet prioritization mechanisms that ensure latency-sensitive applications receive the required bandwidth without interference from less critical traffic streams.

This is particularly beneficial in environments running mixed workloads such as web hosting, database management, cloud services, and enterprise applications. The adapter ensures that each workload receives appropriate network resources, improving overall system stability and responsiveness.

Reliability and Enterprise

Reliability is a core requirement for enterprise networking hardware, and the HPE 331T 4-port adapter is built to meet stringent operational standards. It is designed for continuous operation in demanding environments where downtime is not acceptable. The hardware components are engineered for durability, ensuring long-term stability under sustained workloads.

The adapter also supports redundant networking configurations, allowing administrators to implement failover strategies that maintain connectivity even in the event of a port or link failure. This enhances system resilience and ensures uninterrupted service availability.

Thermal Efficiency and Hardware Longevity

Efficient thermal management is essential for maintaining hardware performance in dense server environments. The HPE 647594-B21 adapter is optimized to operate within standard server cooling systems, ensuring stable temperatures even under heavy network load conditions.

By maintaining optimal operating temperatures, the adapter reduces the risk of thermal throttling and extends the overall lifespan of the hardware. This contributes to lower maintenance costs and improved return on investment for enterprise deployments.

Scalability for Modern IT Infrastructure

As organizations grow, their networking requirements evolve rapidly. The HPE Ethernet 1Gb 4-Port 331T adapter is designed with scalability in mind, enabling IT administrators to expand network capacity without redesigning the entire infrastructure. Its multi-port configuration supports flexible deployment models, making it suitable for both small-scale server environments and large enterprise data centers.

Scalability is further enhanced by the adapter’s ability to support network segmentation. Administrators can allocate specific ports to different network segments, improving traffic organization and enhancing security policies within the infrastructure.

Flexible Deployment Scenarios

This network adapter is commonly deployed in a variety of IT environments including virtualization clusters, storage area networks, application hosting servers, and cloud infrastructure nodes. Its flexibility allows it to adapt to different networking architectures without compromising performance or reliability.

Whether used in standalone servers or integrated into blade systems, the adapter provides consistent and predictable network behavior, which is essential for maintaining service quality in enterprise operations.

Security and Data Integrity Features

Security is an integral part of modern networking, and the HPE 647594-B21 adapter incorporates mechanisms to help maintain data integrity during transmission. By supporting secure packet handling and error correction processes, the adapter minimizes the risk of data corruption and ensures reliable communication between network endpoints.

In enterprise environments where sensitive data is transmitted across internal networks, maintaining data integrity is critical. The adapter contributes to secure infrastructure operations by ensuring that packets are transmitted accurately and efficiently across all active ports.

Network Isolation and Segmentation

The multi-port architecture of the adapter enables effective network segmentation strategies. Organizations can isolate different types of traffic, such as management traffic, application traffic, and storage traffic, across separate ports. This improves both security and performance by reducing congestion and limiting unnecessary exposure between network segments.

Such segmentation is particularly valuable in regulated industries where compliance requirements demand strict separation of data flows and controlled network access policies.

Compatibility

The HPE 331T Ethernet adapter is fully optimized for integration with HPE server ecosystems, including ProLiant rack-mounted servers and blade systems. This ensures seamless driver support, firmware compatibility, and system recognition within HPE management tools.

Integration with enterprise management platforms allows administrators to monitor network performance, diagnose issues, and optimize configurations without requiring third-party tools. This centralized management capability simplifies IT operations and reduces administrative overhead.

Driver and Firmware Optimization

HPE provides optimized drivers and firmware updates for the 647594-B21 adapter to ensure consistent performance and compatibility with evolving server environments. These updates enhance stability, improve throughput efficiency, and address potential vulnerabilities, ensuring long-term reliability in production systems.

Virtualization Host Optimization

Virtualization hosts benefit significantly from the adapter’s multi-port configuration, as it allows separation of different traffic types such as VM traffic, storage traffic, and management traffic. This improves performance isolation and reduces network contention among virtual machines.

The result is a more stable and efficient virtualization environment capable of supporting higher VM densities without compromising performance.

Advanced Networking Architecture

The HPE 331T Ethernet adapter is designed with future-ready networking principles in mind. While it operates at 1Gbps per port, its architecture supports efficient scaling and integration into hybrid networking environments where multiple speed tiers coexist.

Its robust design ensures compatibility with evolving server technologies and network standards, making it a reliable choice for organizations planning long-term infrastructure investments.

As enterprise networking continues to evolve, the HPE 647594-B21 Ethernet 1GB 4-Port 331T PCI-E Plug-in Card Network Adapter remains a foundational component for stable, scalable, and efficient server connectivity across diverse IT ecosystems.