647593-B21 HPE 331T 1GB 4-Ports Ethernet Adapter

HPE 647593-B21 331T 1Gb 4-Port Ethernet Network Adapter

The HPE 647593-B21 331T 1Gb 4-Port Ethernet Network Adapter is a reliable enterprise-grade networking solution designed for stable Gigabit connectivity in server environments. With four RJ-45 ports and Broadcom chipset architecture, this adapter delivers consistent performance, scalability, and efficient network traffic management for data centers and business-critical systems.

General Information

• Manufacturer: HPE 
• Part Number: 647593-B21
• Product Type: Network Adapter  
• Device Category: 4-Port Ethernet Expansion Card

Core Specifications

• Device Type: Network Adapter (NIC)
• Interface: PCI Express 2.0 x4
• Processor: Broadcom BCM5719
• Form Factor: Low-profile plug-in card

Networking Specifications

• Ports: 4 x RJ-45 Ethernet
• Speed: 1 Gbps per port
• Protocols: 10Base-T, 100Base-TX, 1000Base-T
• Connectivity: Wired Ethernet

Enterprise Benefits

• Stable multi-port Gigabit performance
• Efficient traffic distribution
• Low CPU utilization under load
• Reliable 24/7 server operation

Scalability Benefits

• Supports expanding network environments
• Ideal for virtualization and cloud infrastructure
• Flexible multi-port configuration
• Future-ready enterprise networking solution

Reliability Benefits

• Enterprise-grade Broadcom chipset stability
• Consistent long-term performance
• Fault-tolerant multi-port design
• Optimized for mission-critical workloads

Hardware Highlights

• Single Broadcom BCM5719 controller chip
• Optimized for Gigabit Ethernet performance
• Stable multi-port traffic handling
• Reduced CPU utilization during network load

PCI Express Interface Design

• PCIe 2.0 x4 bus connection
• Stable data transfer pathway
• Compatible with enterprise server slots

Port Capabilities

• 4 x RJ-45 Ethernet ports
• Supports 10/100/1000Base-T standards
• Up to 1 Gbps speed per port
• Full-duplex Gigabit communication

Supported Networking Protocols

• Ethernet (10Base-T)
• Fast Ethernet (100Base-TX)
• Gigabit Ethernet (1000Base-T)

Data Transfer Performance

• Up to 1 Gbps per port throughput
• Aggregated multi-port bandwidth support
• Efficient load distribution across ports
• Reduced network congestion

PCI Express 2.0 x4 Slot Compatibility

• PCIe 2.0 specification support
• Standard x4 expansion slot compatibility
• Stable server integration

Low Profile Form Factor

• Low-profile plug-in card design
• Includes bracket options for flexibility
• Suitable for dense rack servers

Network Connectivity Features

• Reliable wired connection stability
• Low latency data transmission
• Secure enterprise communication

Multi-Speed Compatibility

• 10 Mbps, 100 Mbps, and 1 Gbps support
• Auto-negotiation capability
• Backward compatibility with legacy systems

Enterprise Server Integration

• HPE ProLiant DL and ML series support
• Rack and tower server compatibility
• Enterprise IT infrastructure deployment

HPE 647593-B21 331T 1GB 4-Port Network Adapter Overview

The HPE 647593-B21 331T 1GB 4-Port Ethernet Network Adapter is a high-performance server networking solution designed to deliver reliable, scalable, and efficient connectivity in enterprise environments. It is widely used in rack servers, blade infrastructures, virtualization clusters, and cloud-based deployments that require consistent multi-gigabit throughput without compromising latency or reliability.

Enterprise-Class Network Architecture

The architecture of the HPE 331T 1GB 4-Port Ethernet Adapter is built around the principles of redundancy, throughput aggregation, and system efficiency. By integrating four independent Gigabit Ethernet ports into a single PCI Express interface, the adapter enables advanced networking configurations that significantly improve server communication density. This design helps enterprises consolidate multiple network interfaces into one streamlined hardware module, reducing server clutter and improving airflow efficiency within dense rack environments.

Each port operates independently, allowing administrators to configure load balancing, failover protection, and segmented traffic handling. This ensures that mission-critical applications maintain uninterrupted connectivity even during hardware or network fluctuations. The architecture is optimized for high availability environments where downtime is not acceptable and continuous data flow is essential.

High-Speed PCIe Connectivity

The adapter utilizes a PCI Express interface that ensures fast communication between the server motherboard and network processing components. This high-bandwidth connection allows the 4-port Ethernet system to operate at full Gigabit speeds without bottlenecking internal server resources. The PCIe architecture is designed for compatibility with a wide range of enterprise server platforms, making integration seamless in heterogeneous data center environments.

Efficient Bus Utilization and Data Flow

Efficient bus utilization is a key advantage of this adapter. By consolidating multiple network interfaces into a single PCIe slot, the device reduces overall system overhead and frees up valuable expansion slots for other critical components such as storage controllers or GPU accelerators. This improves server scalability while maintaining optimal network performance.

Multi-Port Network Expansion

The four-port configuration provides flexible network expansion options that are particularly useful in virtualization-heavy and multi-tenant environments. Each port can be configured independently for different network segments, allowing separation of storage traffic, application traffic, and management traffic. This improves security, performance, and traffic isolation across the infrastructure.

Traffic Optimization

Load distribution is one of the key benefits of the HPE 331T adapter. By distributing network traffic across multiple ports, servers can handle higher workloads without congestion. This improves response times for applications and ensures consistent data transfer rates under heavy usage conditions. The adapter also supports advanced teaming configurations that enhance throughput by combining multiple ports into a single logical interface.

Redundancy and Failover Protection

In enterprise environments, network redundancy is essential. The adapter supports failover mechanisms that automatically redirect traffic to active ports if a failure occurs on one interface. This ensures uninterrupted service availability, especially in mission-critical systems such as database clusters, virtualization hosts, and cloud orchestration platforms.

Virtualization and Cloud Computing Support

The HPE 331T adapter is optimized for virtualization environments where multiple virtual machines share physical network interfaces. It supports efficient traffic segmentation and ensures consistent performance across virtual workloads. This makes it ideal for platforms running hypervisors such as VMware, Hyper-V, and KVM where network efficiency directly impacts virtual machine responsiveness.

Low Latency Data Transmission

Low latency is critical in modern data centers, particularly for financial applications, real-time analytics, and high-frequency transaction processing. The adapter is engineered to minimize packet processing delays, ensuring that data is transmitted quickly and reliably across the network. This contributes to improved application performance and user experience.

High Throughput Stability

Even under sustained high traffic loads, the adapter maintains stable throughput performance. This is achieved through optimized hardware offloading capabilities that reduce CPU utilization and allow server processors to focus on application workloads rather than network packet handling.

CPU Offload Acceleration

One of the primary advantages of the adapter is its ability to offload network processing tasks from the server CPU. Functions such as checksum calculation, segmentation, and packet reassembly are handled by the adapter itself, improving overall system efficiency and reducing processor load.

Improved System Resource Allocation

By minimizing CPU involvement in network operations, more system resources become available for critical applications. This is especially beneficial in virtualized environments where multiple workloads compete for CPU cycles. The adapter ensures that network traffic does not become a bottleneck in system performance.

Comprehensive driver support ensures that the adapter functions efficiently across major operating systems including Windows Server, Linux distributions, and virtualization hypervisors. This reduces deployment complexity and ensures consistent performance across different software environments.

Flexible Expansion Capabilities

As enterprise environments grow, scalability becomes essential. The HPE 331T adapter supports scalable network architectures by allowing administrators to expand bandwidth without requiring additional server hardware. This makes it an efficient solution for growing data center demands.

Cloud and Hybrid Infrastructure Integration

The adapter is well-suited for hybrid cloud environments where workloads are distributed between on-premises infrastructure and cloud platforms. Its stable multi-port design ensures consistent connectivity across complex networking architectures.