Detailed Specifications
HPE 876449-B21 Synergy 4820C 10/20/25Gb Converged Network Adapter
Overview
The HPE 876449-B21 is a converged network adapter (CNA) built for HPE Synergy compute modules, providing dual ports that support 10 Gb, 20 Gb, and 25 Gb Ethernet. It unifies Ethernet and storage traffic, helping reduce cabling and simplify infrastructure. The adapter incorporates RDMA over Converged Ethernet (RoCEv2) and SR-IOV to minimize CPU overhead while maximizing VM density. It uses a PCI Express 3.0 x16 mezzanine interface to plug directly into Synergy servers.
Key Features
Two 10/20/25 Gb Ethernet ports for flexible speed deployment
Converged I/O supporting both Ethernet and storage traffic
SR-IOV support for virtualization and high VM density
RDMA via RoCEv2 for low-latency and efficient data transfer
Mezzanine form factor optimized for HPE Synergy compute modules
Technical Specifications
| Specification | Details |
|---|
| Brand | HPE |
| Part Number | 876449-B21 |
| Product Type | Converged Network Adapter (CNA) |
| Controller | Marvell QL45604 |
| Host Interface | PCI Express 3.0 x16 mezzanine |
| Ports | 2 × Ethernet (25 Gb capable) |
| Supported Speeds | 10 Gb/s, 20 Gb/s, 25 Gb/s |
| Jumbo Frame Support | Up to 9.6 KB |
| Power Consumption (Typical) | ~13.6 W |
| Power Consumption (Maximum) | ~14.1 W |
| Virtualization Features | SR-IOV, NPAR (network partitioning) |
| RDMA Support | RoCEv2 |
| Security Features | Secure Boot, authenticated firmware updates |
| Packet Acceleration | DPDK (Data Plane Development Kit) support |
| Operating Temperature | 0 °C to 55 °C |
