655639-B21 HPE Flex10 10GB 2Port 530FLB Network Adapter

Details of HPE 655639-B21 10GB 2-Port Network Adapter

The HPE 655639-B21 Ethernet Adapter is a high-performance dual-port 10 Gigabit network interface card designed for enterprise-grade server environments. It delivers fast, stable, and scalable connectivity for data centers, virtualization, and cloud-based workloads.

General Information

• Manufacturer: HPE
• Part Number: 655639-B21
• Product Type: Network Adapter

Technical Specifications

• Form Factor: PCI Express Adapter
• Interface Type: PCI Express 2.0 x8
• Expansion Slot Compatibility: FlexibleLOM slot support
• Fast Ethernet
• 10 Gigabit Ethernet 

Data Transfer Performance

• Maximum Speed: Up to 10 Gbps
• Low latency wired communication
• Optimized packet processing efficiency

Advanced Network Features

Enhanced Functionality

• VLAN tagging and segmentation support
• TCP/IP offloading engine
• Quality of Service (QoS) optimization
• Jumbo frame support for large packet handling
• PXE boot support for remote deployment
• Receive Side Scaling (RSS) for load balancing

Supported Industry Standards

IEEE Compliance

• IEEE 802.3
• IEEE 802.3u
• IEEE 802.3ab
• IEEE 802.3x
• IEEE 802.3ad (LACP)
• IEEE 802.3ae
• IEEE 802.3ap
• IEEE 802.1q
• IEEE 802.1p

The HPE 655639-B21 10GB 2-Port Adapter Network

The HPE 655639-B21 Flex10 10Gb 2-Port 530FLB Adapter Network Adapter PCI Express 2.0 x8 is designed as a high-performance networking solution tailored for enterprise-grade server environments that demand reliable, scalable, and high-throughput data communication. Built to support 10 Gigabit Ethernet standards, this adapter provides a significant upgrade path for organizations transitioning from traditional Gigabit networks to advanced, high-bandwidth infrastructures. Its architecture is engineered to reduce latency while increasing data transmission efficiency, making it a critical component in virtualization-heavy workloads, cloud computing environments, and data-intensive enterprise applications.

Optimized Design for Server-Class Performance

The adapter is built specifically for HPE ProLiant servers, ensuring full compatibility and seamless integration within HPE’s ecosystem. The PCI Express 2.0 x8 interface offers sufficient bandwidth to handle dual-port 10GbE traffic without bottlenecks. This ensures that high-volume workloads such as database replication, virtual machine migration, and large-scale storage access operate efficiently without network congestion.

Flex10 Technology and Network Flexibility

The Flex10 technology embedded in the HPE 655639-B21 adapter enables dynamic bandwidth partitioning, allowing a single physical network port to be logically divided into multiple FlexNICs. This innovative approach enhances network utilization efficiency by allocating bandwidth according to workload requirements. Instead of dedicating fixed resources to each virtual machine or service, Flex10 dynamically adjusts throughput, ensuring optimal performance in real-time environments.

10 Gigabit Ethernet Performance

The 10 Gigabit Ethernet capability of the HPE 655639-B21 Flex10 2-Port 530FLB Adapter ensures ultra-fast data transfer speeds suitable for modern enterprise workloads. With dual-port functionality, the adapter effectively doubles network throughput potential, making it ideal for environments requiring simultaneous high-speed inbound and outbound traffic processing.

PCI Express 2.0 x8 Interface Integration

The PCI Express 2.0 x8 interface plays a crucial role in the performance efficiency of the HPE 655639-B21 adapter. This interface provides a theoretical bandwidth of up to 4 GB/s per direction, which is sufficient to support dual 10GbE ports operating at full capacity. The x8 lane configuration ensures that network traffic is not constrained by bus limitations, allowing consistent and stable throughput under heavy workloads.

Compatibility with Enterprise Server Slots

Designed for seamless integration into HPE ProLiant servers, the adapter fits standard PCIe x8 or higher slots. This ensures broad compatibility across multiple server generations, allowing IT administrators to upgrade network infrastructure without requiring major hardware replacements.

Dual-Port 530FLB Adapter

The dual-port configuration of the HPE 655639-B21 Flex10 10Gb adapter provides built-in redundancy, ensuring continuous network availability in case of port failure or link disruption. This redundancy is critical for mission-critical systems that require uninterrupted connectivity and high availability.

Scalable Network Deployment Models

The HPE 655639-B21 Flex10 2-Port 530FLB Adapter supports scalable deployment models suitable for both small enterprise environments and large-scale cloud infrastructures. Its flexible architecture allows administrators to expand network capacity without major architectural changes.

High Availability and Reliability Network

Reliability is a core design principle of the HPE Flex10 adapter series. The dual-port configuration ensures that network connectivity remains stable even if one port experiences hardware or cable failure. This redundancy is essential for maintaining service uptime in critical enterprise systems.

Security Features and Data Protection

Flex10 technology enables secure segmentation of network traffic by isolating virtual NICs within the same physical adapter. This isolation ensures that sensitive workloads remain protected from unauthorized access or cross-traffic interference, improving overall network security posture.

Support for Multi-Tenant Architectures

Multi-tenant environments require strict isolation and performance consistency between different users or applications. The adapter’s virtual NIC capabilities ensure that each tenant receives dedicated bandwidth allocation, preventing resource contention and performance degradation.

Performance Optimization in Networks

Quality of Service (QoS) features integrated into the adapter allow administrators to prioritize critical network traffic. This ensures that high-priority applications such as ERP systems, databases, and communication platforms receive sufficient bandwidth even during peak usage periods.

Efficient Packet Processing Architecture

The internal architecture of the HPE 655639-B21 adapter is optimized for efficient packet handling, reducing CPU overhead on host servers. This allows more processing power to be allocated to application workloads rather than network management tasks.

Server Integration Process

Installing the HPE 655639-B21 Flex10 10Gb 2-Port 530FLB Adapter involves inserting the card into a compatible PCIe x8 slot within an HPE ProLiant server. Once installed, appropriate drivers and firmware must be configured to ensure optimal performance and compatibility with the operating system and virtualization platform.

Comparison with Standard Network Adapters

Compared to traditional Gigabit Ethernet adapters, the HPE Flex10 10Gb adapter provides significantly higher bandwidth capacity. This improvement enables faster data transfer rates, reduced network congestion, and improved application responsiveness in enterprise environments.