Detailed Specifications
HPE P08451-B21 Marvell 10/25GbE 2-Port SFP28 Adapter
Overview
The HPE P08451-B21 is a network interface card (NIC) featuring two 10/25 GbE SFP28 ports, based on Marvell FastLinQ technology. It is designed for high-throughput, low-latency workloads in virtualized or cloud-native data-center environments. The adapter uses a PCI Express Gen4 x8 interface and supports advanced offload protocols such as RoCE v2 and SR-IOV, reducing CPU load while maximizing I/O efficiency. Its compact, low-profile form factor makes it well-suited for modern HPE ProLiant and Apollo Gen10 / Gen11 servers.
Key Features
Two 10/25 GbE SFP28 ports for flexible connectivity
Marvell FastLinQ controller with offload support
PCI Express 4.0 ×8 for high I/O bandwidth
RoCE v2 and TCP offloads reduce application latency
Virtualization-ready: SR-IOV and VMware NetQueue
Technical Specifications
| Specification | Details |
|---|
| Brand | HPE |
| Part Number | P08451-B21 |
| Product Type | Network adapter, 10/25 GbE dual-port SFP28 |
| Processor / Controller | Marvell FastLinQ (QL41xxx family) |
| Bus Interface | PCI Express Gen4 x8 |
| Ports | 2 × SFP28 |
| Data Rate | 10 / 25 Gbps per port |
| Offload Capabilities | RoCE v2, TCP/IP |
| Virtualization Features | SR-IOV, VMware NetQueue |
| Form Factor | Low-profile, half-height card |
| Compatibility | HPE ProLiant & Apollo Gen10 / Gen11 Servers |
| Power Consumption | Power-efficient design (typical) |
| Weight | Not publicly disclosed |
| Supported Protocols | Ethernet, RoCE |
| PCI Compliance | OCP / standard PCIe slot (depending on server) |
| Firmware Security | Signed firmware / trusted root-of-trust architecture |
| Certification / Compliance | Industry-standard Marvell adapter, validated by HPE |
