2-Port Adapter HPE P24437-B21 Xilinx X2522-25G Ethernet 10/25Gb SFP28

HPE P24437-B21  High-Density 10/25Gb SFP28 Network Adapter

The HPE P24437-B21 — powered by the Xilinx X2522-25G chipset — is a compact, enterprise-grade dual-port SFP28 adapter engineered for data centers, virtualization hosts, and high-performance storage networks. Combining versatile 10/25 Gigabit Ethernet capability with low-latency packet handling and hardware offloads, this NIC delivers dependable throughput for demanding workloads.

Core Attributes & Manufacturer Details

• Brand: HPE
• Manufacturer part number: P24437-B21
• Silicon / Controller: Xilinx X2522-25G (programmable FPGA-based architecture)
• Form factor: 2-port SFP28 (supports 10GbE and 25GbE)

Key Technical Specifications

Designed Use Cases

Optimized for Modern Data Centers

Ideal for server uplinks, leaf/top-of-rack connections, and storage networks where a balance of high throughput and predictable latency is essential. Use this adapter to:

• Offload CPU cycles with hardware acceleration during East-West traffic flows
• Support NVMe/over-Fabric, Ceph, or other distributed storage fabrics
• Enable 25GbE aggregation for hyperconverged infrastructure and high-density virtualization

Virtualization & Cloud Platforms

With SR-IOV and VM-aware features, the P24437-B21 helps maximize VM network performance and decreases hypervisor overhead — a good match for cloud stacks, container platforms and multi-tenant environments.

Benefits — Why Choose the P24437-B21

• Flexible speeds: Seamless support for both 10G and 25G links reduces spare-parts inventory.
• Low-latency forwarding: FPGA-based packet processing minimizes jitter for latency-sensitive apps.
• Enterprise resilience: Mature firmware and thermal protections for 24/7 operation.
• Virtualization-friendly: SR-IOV and offloads improve VM density and network QoS.

Before You Install

• Confirm that your server’s PCIe slot and BIOS version support the adapter (consult HPE compatibility matrices).
• Choose correct SFP28 optics — verify module compatibility with both HPE and third-party transceivers.
• Back up firmware and settings before performing upgrades, and apply vendor-recommended firmware releases.

Practical Setup Steps

1. Power down the host (or follow hot-plug guidance if supported by the server platform).
2. Seat the adapter in a full-height PCIe slot and secure with the retention bracket.
3. Install the latest driver package for your OS and validate link negotiation at 10G/25G.
4. Test connectivity and run throughput checks (iperf3, pktgen) to confirm expected performance.

Comparisons & Positioning

Compared to single-rate 25Gb adapters, the HPE P24437-B21’s dual-rate capability (10/25Gb) provides deployment flexibility and lowers overall costs where a mix of link speeds exists. Against competing NIC families, its Xilinx-powered design emphasizes programmable logic benefits — allowing advanced offload features and potential microcode updates without hardware changes.

Feature Snapshot Quick Reference

• Ports: 2 × SFP28
• Speeds: 10GbE and 25GbE
• Chipset: Xilinx X2522-25G
• Form factor: Low-profile compatible, full-height bracket
• Virtualization: SR-IOV support

Compatibility Checklist

What to Verify Before Purchasing

• Server model and BIOS/firmware compatibility with HPE P24437-B21
• Required PCIe lane width and available electrical slot (PCIe Gen3/4 recommended)
• Driver support for your chosen OS version and hypervisor release
• Approved optics list for link distances (SR for short-reach, LR for long-reach)

Can the P24437-B21 run at 10Gb on one port and 25Gb on the other simultaneously?

Yes — the dual SFP28 ports are designed to negotiate independently, enabling mixed-speed deployments. Validate link settings with the correct transceivers and switch port configuration.

Does this adapter support RDMA or RoCE?

Many Xilinx-based HPE adapters include offloads that can accommodate RDMA/RoCE in supported firmware/driver stacks. Confirm RDMA support in the HPE product documentation and your OS/hypervisor driver release notes.

Is third-party optics acceptable?

Third-party SFP28 modules often work, but vendor-validated optics provide the most predictable results. If using third-party transceivers, test thoroughly under load and keep an inventory of vendor-approved replacements.

Final Practical Notes (Product Identification)

When ordering or searching, use the full manufacturer part number P24437-B21 and reference the chipset Xilinx X2522-25G to ensure you receive the correct HPE-branded adapter. Product listings and stock-keeping pages often include these identifiers — keep them handy for procurement, warranty claims, and compatibility checks.

HPE P24437-B21 Xilinx X2522-25G Ethernet Adapter overview

Content marketing angles for category pages

Solution-focused messaging

Position the adapter in content assets that answer buyer problems: "how to upgrade rack uplinks from 10Gb to 25Gb", "reducing virtualization overhead with SR-IOV-enabled NICs", or "designing a leaf-spine 25Gb network for mid-sized clusters". These articles can link to the category page to create topical authority and improve conversion rates for technical decision-makers.

Comparison and buying guides

Create comparison tables that contrast P24437-B21 with other 25Gb NICs and 10Gb SFP+ cards based on throughput, offloads, virtualization support, and price-per-port. Buyers often search for "best 25Gb NIC for HPE ProLiant" or "25Gb vs 10Gb upgrade cost" — provide clear, evidence-backed content and include CTA links to the product SKU for purchase or RFQ.

Support, warranty, and serviceability

HPE support integration

When purchased through HPE or authorized resellers, the P24437-B21 is typically covered under HPE support contracts. Refer to your HPE warranty terms for advance replacement and RMA procedures. Keep serial numbers and warranty entitlements handy to speed up support interactions.

Diagnostic tools and logs

HPE provides diagnostics accessible via iLO and OS-level utilities. Use adapter-specific diagnostic utilities to gather logs, transmit/receive counters, and events before contacting support. Firmware update logs and driver version details are critical when interacting with vendor support teams.

Common troubleshooting scenarios

Link training and speed negotiation issues

If a port is stuck at 10Gb when 25Gb is expected, check optical transceiver compatibility, verify cable types (DAC vs SR vs LR), and confirm switch port capabilities. Some switches require explicit configuration for 25Gb lanes or have PHY reset sequences post-firmware updates.

SR-IOV and VM assignment problems

When VFs are not visible in the OS, verify BIOS SR-IOV enablement, correct driver installation, and VF count limits. Hypervisors may require additional configuration to expose VFs to VMs and to map PCIe addresses consistently across host reboots.

This adapter suitable for NVMe-over-Fabrics (NVMe-oF) deployments

Yes — for iSCSI-based or RDMA-capable transports supported by the X2522 and host OS, the adapter can be part of NVMe-oF designs. Confirm RDMA/kernel RoCE support in your OS and test latency/throughput under storage workloads for sizing.

Related categories and cross-sell opportunities

Compatible HPE transceivers and DACs

Offer HPE-branded or HPE-qualified SFP28 and SFP+ transceivers and DAC/AOC cables alongside the adapter to increase attach rate and ensure tested interoperability. Bundled SKUs for server uplinks and top-of-rack switches simplify procurement for customers performing infrastructure refreshes.

Switching and cabling upgrades

Promote leaf-spine 25Gb switching fabrics and structured cabling solutions when customers are evaluating the P24437-B21. Provide guidance on uplink oversubscription, spine aggregation, and the economics of moving from 10Gb to 25Gb at scale.

Accessories and spares

Include spare faceplate brackets, low-profile mounting options, and ESD-safe shipping kits for service teams. Maintain a recommended spare pool based on deployment scale to reduce mean time to repair (MTTR).

Content upgrade suggestions for the page

To improve conversions, add downloadable spec sheets, a compatibility matrix spreadsheet, and a short how-to video demonstrating installation and firmware updates. Technical buyers appreciate concise checklists and validated configuration examples for common HPE server models.

Conversion-focused content blocks

Technical spec highlights (snippet for product cards)

• Controller: Xilinx X2522
• Ports: 2 × SFP28 (10/25Gb)
• PCIe: x8/x16 (Gen3+ recommended)
• Virtualization: SR-IOV
• Offloads: LRO, LSO, checksum, RSS, hardware QoS

Buyer intent CTAs (copy suggestions)

Examples: "Check compatibility with my HPE ProLiant model", "Download firmware & drivers", "Request a quote for bulk 25Gb upgrades", "Compare 10Gb vs 25Gb total cost of ownership". Use action-oriented microcopy near pricing tiles and RFQ forms to capture mid-funnel enterprise leads.

Editorial and content maintenance notes

Keeping technical content accurate

Review compatibility notes, driver versions and firmware compatibility every quarter or after major vendor announcements. Ensure spec tables reflect firmware-limited features and that search snippets highlight up-to-date benefits like SR-IOV support or new offloads.

Structured data & internal links

Embed structured product data and canonical references in adjacent sections. Internally link to related server pages, switching fabrics, transceiver SKUs, and knowledge base articles describing firmware update procedures to improve crawlability and user navigation.

Legal & compliance considerations

Export controls and telecom compliance

When shipping internationally, consider export regulations for cryptographic or advanced networking features — consult HPE and regional compliance resources. Ensure lead times account for customs paperwork if deploying globally across multiple data centers.

End-user license and firmware terms

Firmware updates and driver packages are subject to vendor license terms; maintain an archive of approved firmware and retain change logs for audit purposes in regulated industries.