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Name:
870825-B21
- Description:
- HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI
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Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
TRUSTED, TRIED, PROVEN
870825-B21 Overview
870825-B21 is a high-speed Ethernet adapter engineered for reliable performance in data centers and high-speed workstations. It supports a data rate of 10Gbps over a PCIe connection, ensuring rapid data transfer and low latency while adhering to TCP/IP, UDP, iSCSI, and NFS protocols. Designed in an internal PCIe card form factor, this product is compatible with Windows, Linux, macOS, VMware, and Hyper-V, making it an optimal choice for diverse networking environments.
Ideal for high-demand networking scenarios, 870825-B21 provides advanced features such as auto-negotiation, Wake-on-LAN, Jumbo Frames, and QoS to enhance overall network performance. Its robust design ensures reliable operation within an operating temperature range of 0 to 70°C and a storage temperature range of -40 to 85°C, while the RJ-45 connector and PCIe x4 bus type harmonize with modern networking infrastructures for seamless integration.
What is the price of 870825-B21?
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Explore more options from Network Adapters or explore other Hpe products.
870825-B21 Specifications
| Product Type | Network Adapter |
| Adapter Type | Ethernet |
| Data Rate | 10Gbps |
| Connection Interface | PCIe |
| Supported Protocols | TCP/IP / UDP / iSCSI / NFS |
| Form Factor | Internal PCIe Card |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Windows / Linux / macOS / VMware / Hyper-V |
| Max Speed | 10Gbps |
| Supported Features | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS |
| Power Consumption | 5W |
| Connector Type | RJ-45 |
| Maximum Range | 100 meters |
| Bus Type | PCIe x4 |
| Product Name | 870825-B21 High-Speed Network Adapter |
| Height | 0.5 inches |
| Width | 4 inches |
| Depth | 6 inches |
| Weight | 1.2 lbs |
870825-B21 Use Case
Enterprise Data-Center Bandwidth Upgrade with 870825-B21 HPE 10/25Gb SFP28 Adapter
In a multinational financial services data center, IT teams deploy the 870825-B21 HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI to upgrade legacy 10Gb links to 25GbE on core leaf switches. This adapter doubles per-port throughput without costly chassis swaps, slashes latency by up to 40 %, and ensures seamless virtualization traffic growth—delivering resilient, future-proof infrastructure and accelerating transaction processing.
HPC Cluster Interconnect Optimization Using 870825-B21 for Low-Latency Compute
A research university integrates the 870825-B21 HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI into its GPU-accelerated HPC cluster fabric. By replacing 10Gb links with dual-port 25GbE SFP28 modules, scientists achieve sub-microsecond latency and 2.5× higher bandwidth for MPI workloads. The result is 30 % faster simulation runtimes, streamlined node cabling, and simplified port management—maximizing compute utilization and research throughput.
Campus Core Switch Aggregation with 870825-B21 for Scalable 25GbE Uplinks
A large university campus leverages the 870825-B21 HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI to aggregate multiple departmental access switches into a 25GbE core switch. This deployment consolidates four 10Gb uplinks into two 25Gb links, freeing port capacity and reducing rack-space needs. The implementation delivers 2.5× greater headroom for peak traffic, optimizes power consumption by 20 %, and simplifies network expansion to support digital learning initiatives.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Adapter Type | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Bus Type | PCIe x1 | PCIe x4 | PCIe x1 | PCIe x4 | PCIe x1 |
| Compatibility | Windows, Linux, macOS | Windows, Linux, macOS | Windows, Linux, macOS | Windows / Linux / macOS / VMware / Hyper-V | Windows, Linux, macOS, VMware, Hyper-V |
| Connection Interface | PCIe | PCIe | PCIe | PCIe | PCIe |
| Connector Type | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| Data Rate | 10Gbps | 10Gbps | 1Gbps | 10Gbps | 1Gbps |
| Depth | 0.8 inches | 1.5 inches | N/A | 6 inches | 2.0 inches |
| Form Factor | Internal PCIe Card | Internal PCIe Card | Internal PCIe Card | Internal PCIe Card | Internal PCIe Card |
| Height | 0.5 inches | 0.7 inches | N/A | 0.5 inches | 0.5 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Speed | 10Gbps | 10Gbps | 1Gbps | 10Gbps | 1Gbps |
| Maximum Range | 100 meters | 100 meters | N/A | 100 meters | 100 meters |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 8W | 5W | N/A | 5W | 5W |
| Product Name | 700700-B21 High-Speed Ethernet Adapter | 817746-B21 High Performance Ethernet Adapter | B9F53A High-Performance Ethernet Adapter | 870825-B21 High-Speed Network Adapter | B9F56A High-Performance Ethernet Adapter |
| Product Type | Network Adapter | Network Adapter | Network Adapter | Network Adapter | Network Adapter |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Supported Protocols | TCP/IP, UDP | TCP/IP, UDP | TCP/IP, UDP | TCP/IP / UDP / iSCSI / NFS | TCP/IP, UDP |
| Weight | 0.3 lbs | 0.5 lbs | N/A | 1.2 lbs | 0.2 lbs |
| Width | 4.4 inches | 3.5 inches | N/A | 4 inches | 3.0 inches |
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Questions & Answers
Q
What is the HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI?
A
The HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI is a dual-port PCIe network adapter that delivers both 10GbE and 25GbE connectivity via SFP28 ports for HPE servers.
Q
Which network speeds does this adapter support?
A
It supports 10 Gigabit Ethernet and 25 Gigabit Ethernet data rates over each SFP28 port.
Q
What is the form factor and port type of this adapter?
A
The adapter uses a low-profile PCIe form factor with two SFP28 ports for high-speed fiber connectivity.
Q
Is the HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI compatible with HPE servers?
A
Yes, it is fully compatible with HPE ProLiant Gen10 and Gen11 servers when installed in an available PCIe slot.
Q
Which operating systems are supported by this adapter?
A
It supports Windows Server, major Linux distributions, VMware ESXi, and HPE-UX with out-of-the-box driver support.
Q
Which SFP28 transceivers and cables work with this adapter?
A
The adapter is validated for use with genuine HPE SFP28 modules and DAC/AOC cables rated for 10/25GbE speeds.
Q
How do I install the HPE ETH 10/25GB 2P adapter in my server?
A
Power down the server, insert the adapter into an empty PCIe slot, secure it with the bracket screw, then power on; drivers load automatically.
Q
Can I mix 10GbE and 25GbE transceivers on the same adapter?
A
Yes, each SFP28 port independently negotiates either 10GbE or 25GbE based on the installed transceiver.
Q
What is the SKU for ordering this adapter?
A
The ordering SKU is 870825-B21 for the HPE ETH 10/25GB 2P 661 SFP28 ADPTR PL-SI.
Q
Does the adapter support RDMA over Converged Ethernet (RoCE)?
A
Yes, it supports both RoCE v1 and RoCE v2 for low-latency, high-throughput networking.
Q
What is the typical power consumption of this adapter?
A
Under full load, the adapter consumes approximately 7 watts, providing efficient performance.
Q
What warranty does HPE offer for this network adapter?
A
HPE provides a limited lifetime warranty on the adapter when used in certified HPE server environments.
Q
Is this adapter hot-pluggable or hot-swappable?
A
No, the adapter requires a server shutdown for safe installation or removal to avoid hardware issues.
Q
How does the HPE ETH 10/25GB adapter enhance network performance?
A
By offering dual-port 10/25GbE connectivity, it reduces network bottlenecks and increases overall data throughput.
Q
What are the primary use cases for this network adapter?
A
It’s ideal for data centers, virtualization, cloud deployments, and high-speed storage networking applications.
Q
Where can I purchase genuine HPE SFP28 modules and cables?
A
Genuine HPE modules and cables are available through authorized HPE resellers or the official HPE Store online.
