HPE 855800-B21 25Gb SFP28 SR 100m Transceiver

Name: HPE 855800-B21 25Gb SFP28 SR 100m Transceiver
Brand: HPE
SKU: 855800-B21
Price: 196.00 USD
Availability: InStock
Rating: 5 (8 reviews)

Mfr. Part #: 855800-B21

Brand: Hpe

Condition: New

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855800-B21

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overview

specifications

faqs

reviews

overview

855800-B21 Overview

HPE 855800-B21 Sfp28 Transceiver Module - 25 Gigabit Ethernet :

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specifications

Specifications

Overview

Condition	New
Brand	HPE
Stock	In Stock

Key Features

Device Type	Sfp28 Transceiver Module
Form Factor	Plug-in Module

Networking

Connectivity Technology	Wired
Cabling Type	25gbase-sr
Data Link Protocol	25 Gigabit Ethernet
Data Transfer Rate	25 Gbps
Max Transfer Distance	328 Ft
Features	Full Duplex Capability

Expansion / Connectivity

Interfaces	1 X Ethernet 25gbase-sr - Lc Multi-mode X 2

faqs

Frequently Asked Questions

What is the primary function of the HPE 855800-B21 SFP28 transceiver? +

The HPE 855800-B21 is a high-performance 25Gb Ethernet SFP28 transceiver designed for short-range data transmission. It utilizes multi-mode fiber optic cabling to provide reliable, high-speed connectivity within data centers and enterprise environments, ensuring low latency and consistent throughput for bandwidth-intensive server and storage networking applications.

Which networking hardware is compatible with the 855800-B21 module? +

This module is specifically engineered to integrate seamlessly with a wide range of HPE ProLiant servers, HPE Apollo systems, and compatible HPE switches that feature SFP28 ports. It is optimized for HPE’s hardware ecosystem, ensuring that physical layer communication meets strict performance standards for enterprise-grade network infrastructure deployment.

Does the HPE 855800-B21 support backward compatibility with SFP+ ports? +

While SFP28 ports are physically compatible with SFP+ modules, the 855800-B21 is designed to operate at 25Gb speeds. Using this transceiver in older 10Gb SFP+ ports often depends on the specific host switch or server firmware configuration. It is always recommended to verify the supported interface speeds on your networking equipment before deployment to ensure optimal link negotiation.

What type of cabling infrastructure is required for this SFP28 transceiver? +

The HPE 855800-B21 requires multi-mode fiber optic cabling, typically utilizing LC duplex connectors. Because it is optimized for short-reach applications, it performs best when paired with high-quality OM3 or OM4 fiber patch cables. Proper cable management and using clean, high-grade fiber are essential to maintaining signal integrity and preventing packet loss over the link.

How does the SFP28 form factor improve network performance? +

The SFP28 form factor provides a significant performance boost over the legacy SFP+ standard by enabling 25Gbps per lane. This allows data centers to achieve higher port density and improved throughput, effectively doubling the bandwidth compared to 10GbE while maintaining the same physical footprint, which is critical for scaling modern cloud and enterprise server environments.

Is any specific software configuration needed to deploy the 855800-B21? +

Generally, this transceiver is a plug-and-play component that follows standard SFP28 MSA protocols. Once inserted into a compatible HPE port, the networking device should automatically detect the module. However, depending on the switch operating system, you may need to verify that the port is explicitly configured for 25Gb speed rather than auto-negotiating down to slower link rates.

What environment is best suited for this 25GbE optical transceiver? +

This transceiver is ideally suited for high-density data center racks, server-to-switch uplinks, and enterprise core networking. Its design excels in environments where low power consumption and high heat dissipation are required for sustained operations. The module remains stable under standard operating temperatures found in climate-controlled server rooms, ensuring consistent performance for mission-critical traffic.

How can I verify the status and health of the 855800-B21 once installed? +

You can monitor the module status through your HPE switch or server management console, such as HPE OneView or the switch CLI. These interfaces provide real-time diagnostic data including optical signal strength, transceiver temperature, and voltage levels, allowing you to proactively manage your physical layer infrastructure and identify potential connectivity issues before they impact network uptime.

Can I request a bulk quote for the HPE 855800-B21 from BuyRouterSwitch.com? +

Absolutely. If you are planning a large-scale hardware refresh or need multiple units for your data center, our sales team can provide competitive bulk pricing. Please contact us directly with your volume requirements so we can assist in streamlining your procurement process and providing the best possible rates for your enterprise project needs.

Why should I choose BuyRouterSwitch.com for my HPE transceiver needs? +

At BuyRouterSwitch.com, we specialize in providing authentic enterprise-grade networking components for professional IT environments. We maintain a focus on secure procurement and reliable inventory, ensuring that every product meets the necessary specifications for your infrastructure. Our team is dedicated to helping you find the exact components required to keep your network performing at its peak potential.

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