Detailed Specifications
HPE 870824-B21 Ethernet 10/25 Gb 2-Port SFP28 Adapter
Overview
The HPE 870824-B21 is a dual-port server network adapter designed to deliver both 10 Gb/s and 25 Gb/s Ethernet speeds via SFP28 interfaces. It fits into server mezzanine or adapter slots, enabling high-throughput uplinks for virtualised hosts, storage clusters, and compute-dense racks. The adapter supports full-line-rate traffic on each port, advanced offload capabilities, and a migration path from established 10 Gb infrastructures toward 25 Gb deployments. With its compact form factor and certified compatibility with HPE server platforms, it is ideal for environments where dual high-speed links and efficient I/O are required.
Key Features
Two SFP28 ports supporting both 10 Gb/s and 25 Gb/s link speeds.
Full-line-rate dual-port throughput for high-bandwidth server uplinks.
Supports advanced features (SR-IOV, offloads, large jumbo frames) for virtualised infrastructure.
Migration-ready adapter enabling current 10 Gb/s use and future 25 Gb/s upgrade path.
Technical Specifications
| Specification | Value |
|---|
| Brand | HPE |
| Part Number | 870824-B21 |
| Product Type | Ethernet 10/25 Gb 2-Port SFP28 Adapter |
| Port Count | 2 |
| Supported Link Speeds | 10 Gb/s and 25 Gb/s per port |
| Port Type | SFP28 |
| Host Interface | FlexibleLOM / Adapter slot |
| Bus Specification | PCI Express 3.0 |
| Throughput (Bidirectional) | Up to ~50 Gb/s per port (~100 Gb/s aggregate) |
| Jumbo Frame Support | Up to ~9.2 KB |
| Advanced Features | SR-IOV, RSS, LSO, VXLAN/NVGRE tunnel offloading |
| Compatible Platforms | HPE server platforms supporting 10/25 Gb Ethernet |
| Use Case | Dual high-speed links for servers, storage nodes, virtualised hosts |
| Typical Weight | ~0.28 lb (~0.13 kg) estimation |
| Dimensions (approx.) | Not publicly specified |
