HPE P26256-B21

Gigabit Ethernet Adapter 4-Port 1Gb OCP 3.0 Network Adapter

The HPEP26256-B21 4-Port 1Gb Gigabit EthernetNetwork Adapter is a versatile and high-efficiency solution tailored for modern HPEGen10 Plus and Gen11 servers that support OCP 3.0 form factors. Designed for environments requiring dense I/O and low-latency performance, this adapter delivers reliable 1GbE connectivity across four ports, enabling scalable networking with reduced cabling complexity. It is ideal for businesses looking to enhance server networking capabilities while maintaining cost-effectiveness and platform compatibility. Whether you're running virtual machines, supporting cloud workloads, or connecting to storage systems, the P26256-B21 adapter ensures optimal performance, energy efficiency, and simplified deployment.

Features

Built on a proven design optimized for HPEservers, the P26256-B21 OCP 3.0Gigabit EthernetAdapter offers four Gigabit Ethernet ports for resilient network connectivity in demanding IT environments. Its OCP 3.0 form factor allows seamless integration into HPEProLiant and Apollo systems, reducing footprint while enhancing I/O density. The adapter supports key networking technologies such as VLAN tagging, TCP segmentation offload (TSO), checksum offload, and Receive Side Scaling (RSS), all designed to reduce CPU overhead and improve throughput.The device is fully compatible with major operating systems and hypervisors, ensuring smooth deployment in diverse infrastructures. Administrators can take advantage of HPEnetwork management tools for easy configuration, diagnostics, and firmware updates. Ideal for server consolidation, virtualization, and software-defined environments, this adapter delivers dependable 1GbE performance in a compact and efficient package.

Advanced Options

The HPEP26256-B21 Gigabit Ethernet Adapter is engineered for consistent and efficient performance in modern data center environments. With four independentGigabit Ethernet ports, it provides fault-tolerant connectivity options and supports link aggregation to maximize bandwidth. The adapter leverages hardware-based offload technologies to enhance network performance while reducing host CPU load, improving the overall system responsiveness during peak traffic.

Product Key Features

• • 4 × 1GbE ports for flexible network connectivity

  • Compact OCP 3.0 form factor for HPEservers

  • Offload features: TSO, LSO, and checksum offload

  • VLAN tagging and Receive Side Scaling (RSS) support

  • Low power consumption for energy-efficient data centers

  • Broad OS and virtualization platform compatibility

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Reliability & Performance

Its OCP 3.0 small form factor is designed for high-density server platforms, offering superior airflow, simplified cable management, and easy tool-less servicing. The card's thermal profile ensures efficient cooling even in densely packed server environments. Whether in cloud-native applications or traditional enterprise deployments, this adapter offers the durability, compatibility, and manageability that IT professionals demand from enterprise-grade networking components.

Key Features :

• 4 × 1Gb Gigabit Ethernet ports

• OCP 3.0 form factor for Gen10+/Gen11 servers

• TCP segmentation and checksum offload support

• VLAN tagging and RSS capabilities

• Energy-efficient low-profile design

• Compatible with Windows, Linux, and VMware

Specification	Details
Model Number	P26256-B21
Product Type	Quad-Port 1GbGigabit EthernetNetwork Adapter
Form Factor	OCP 3.0 Small Form Factor
Ports	4 × 1GbE RJ-45
Interface	OCP 3.0 (PCIe 3.0 x8 electrical)
Data Rate	1 Gbps per port
Offload Features	TSO, LSO, Checksum Offload, RSS
OS Compatibility	Windows, Linux, VMware ESXi
Power Consumption	~5.5 Watts typical
Dimensions	Approx. 7.6 × 6.9 cm (3.0 × 2.7 in)
Compatibility	HPEProLiant Gen10 Plus & Gen11 (OCP 3.0 supported)