• HPE 870825-B21 dual-port 10/25GbE SFP28 PCIe adapter with heatsink
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HPE

HPE 870825-B21 | 2x 10/25GbE SFP28 PCIe adapter, dual-port, SR-IOV, PXE boot

870825-B21

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Description

Dual-port 10/25GbE SFP28 adapter delivering low-latency server connectivity with flexible 10G or 25G operation per port. Supports virtualization features like SR-IOV and common offloads for efficient CPU utilization. Ideal for high-density virtual hosts, storage networks, or leaf connectivity.

Features

- Flexible 10/25GbE per-port operation
- High-performance offloads to reduce CPU overhead
- SR-IOV for efficient virtualization and NFV workloads
- Interoperates with SFP28 optics and cost-effective DACs

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Ports: 2 x SFP28
- Port speeds: 10GbE or 25GbE per port (auto-negotiation as supported)
- Host interface: PCIe 3.0 x8
- Transceiver/DAC support: SFP28 optics, DAC, and AOC; backward compatible with SFP+ at 10G
- Networking features: SR-IOV, VLAN tagging, jumbo frames, checksum/TSO/LRO offloads
- Boot support: PXE
- OS compatibility: Major Linux distributions and Windows Server (driver-dependent)
- Use cases: Virtualization hosts, IP storage, 25G ToR uplinks

FAQs

Q: Can I run one port at 25G and the other at 10G?
A: Yes, ports can operate independently at 10G or 25G when supported by optics/DAC and the connected switch.

Q: Does this card include transceivers?
A: Transceivers or DAC cables are typically sold separately; select SFP28 (for 25G) or SFP+ (for 10G) according to your needs.

Q: Is SR-IOV enabled by default?
A: SR-IOV requires platform and OS support and may need to be enabled in system firmware and drivers.

Q: Will it work in a PCIe Gen4 slot?
A: Yes, PCIe is backward/forward compatible. The adapter will operate at PCIe Gen3 speeds.

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