SOLR-SFM40G-SR4 Xilinx Solarflare 40GBASE-SR4 850NM QSFP+ Transceiver Module

Highlights of Solarflare SOLR-SFM40G-SR4 Transceiver Module

The Solarflare SOLR-SFM40G-SR4 is a high-performance 40GBASE-SR4 QSFP+ optical transceiver module designed for fast, reliable, and scalable data center and enterprise networking. Optimized for 850nm multimode fiber, this module supports 40 Gigabit Ethernet connectivity, providing efficient high-speed optical links for servers, switches, and storage networks.

General Information

• Manufacturer: Xilinx
• Part Number: SOLR-SFM40G-SR4
• Network Technology: 40 Gigabit Ethernet
• Product Category: QSFP+ Optical Transceiver
• Sub Type: 40GBASE-SR4 850NM QSFP+

Technical Specifications

• Ethernet Technology: 40 Gigabit Ethernet
• Fiber Standard: 850NM multimode
• Maximum Data Transfer Rate: 40 GBPS
• Low-latency performance optimized for enterprise networks
• Supports high-speed data transfer over multimode fiber

Form Factor and Physical Dimensions

• Height: 0.5 cm
• Width: 0.5 cm
• Depth: 2.2 cm

Connectivity and Ports

• 1 × MPO 40GBASE-SR4 optical port
• High-speed optical connectivity for switches, servers, and storage
• Hot-pluggable QSFP+ interface for easy deployment

Standards and Compliance

• IEEE 802.3ba 40GBASE-SR4
• Compatible with QSFP+ ports on NICs, switches, and servers
• Supports MPO multimode fiber cabling standards

Key Features

• 40G QSFP+ high-speed optical module
• Hot-swappable for simple replacement and installation
• Energy-efficient and reliable design
• Suitable for enterprise, data center, and HPC applications

Standards & Compatibility

• IEEE 802.3ba 40GBASE-SR4 compliant
• Compatible with QSFP+ ports on switches, NICs, and servers
• Supports standard MPO multimode fiber infrastructure

Interfaces and Ports

• 1 × MPO 40GBASE-SR4 network interface
• High-speed fiber-optic connectivity for enterprise networks
• Supports multimode fiber connections up to standard distances

Media and Performance

Supported Media Types

• Optical fiber (multimode)
• 850 nm wavelength
• Compliant with 40GBASE-SR4 Ethernet standards

Overview of Solarflare SOLR-SFM40G-SR4 40 Gigabit Transceiver

The Solarflare SOLR-SFM40G-SR4 40GBASE-SR4 QSFP+ optical transceiver module is a high-performance networking component designed to provide reliable, low-latency 40 Gigabit Ethernet connectivity for modern data centers and enterprise network environments. This transceiver module operates at an 850nm wavelength, supporting short-range data transmission over multimode fiber with distances of up to 100 meters using OM3 fiber and up to 150 meters with OM4 fiber, making it ideal for high-speed interconnects within server racks, top-of-rack switches, and storage area networks. As a QSFP+ form factor device, it offers a compact, hot-pluggable interface that simplifies deployment and allows for flexible network scaling without requiring significant changes to existing cabling infrastructure.

QSFP+ Form Factor and Hot-Pluggable Design

The QSFP+ form factor of the Solarflare SOLR-SFM40G-SR4 transceiver module supports quad-lane operation, combining four 10Gbps channels into a single 40GbE interface. This design enables high-density networking solutions that optimize switch port utilization while maintaining superior performance. The hot-pluggable capability allows for easy installation or removal from compatible network devices without shutting down the system, reducing downtime and supporting maintenance or network expansion with minimal operational impact. This feature is particularly valuable in enterprise data centers where continuous network uptime is critical, and frequent port reconfiguration or upgrades are required to meet growing bandwidth demands.

40GBASE-SR4 Optical Connectivity for Short-Range Applications

The SOLR-SFM40G-SR4 module is optimized for short-range multimode fiber applications, offering reliable 40 Gigabit Ethernet connectivity over distances up to 100 meters on OM3 fiber and 150 meters on OM4 fiber. Operating at an 850nm wavelength, it efficiently transmits high-speed data signals between servers, switches, and storage arrays within a single rack or between adjacent racks. This makes it ideal for top-of-rack (ToR) and end-of-row (EoR) network architectures, where short-range, high-bandwidth links are critical to maintaining low-latency performance across high-performance computing clusters or storage area networks.

Advanced Signal Integrity and Low-Latency Performance

The Solarflare SOLR-SFM40G-SR4 module is engineered for high signal integrity and minimal latency, critical for environments where microsecond-level timing precision impacts application performance. The module leverages precise optical alignment and high-quality components to ensure stable, error-free signal transmission. Low latency is particularly important for high-frequency trading, high-performance computing, cloud applications, and real-time analytics platforms where rapid data transfer between network nodes can directly influence performance outcomes.

Power Efficiency

The SOLR-SFM40G-SR4 transceiver module is designed to operate with optimized power efficiency, reducing heat generation and enabling higher density deployments within networking equipment. Low power consumption minimizes the need for active cooling while supporting stable operation in high-performance environments. The module’s thermal management features ensure consistent optical performance and prevent overheating, even when multiple high-speed transceivers are deployed in a single network switch chassis. Efficient thermal design reduces operating costs and extends the service life of both the transceiver and the host equipment.

Enterprise Applications and Data Center Use Cases

The Solarflare SOLR-SFM40G-SR4 40GBASE-SR4 optical transceiver is ideal for a wide range of enterprise and data center applications. In high-performance computing (HPC) clusters, the module provides low-latency, high-throughput connectivity between compute nodes, supporting complex simulations, scientific calculations, and big data analytics. In cloud data centers, the module enables rapid data transfer between virtualized servers and storage arrays, supporting large-scale virtualization, multi-tenant workloads, and software-defined networking applications.

Hot-Swappable and Serviceability Features

The hot-swappable design of the Solarflare SOLR-SFM40G-SR4 module allows network administrators to add, remove, or replace transceivers without powering down network equipment, maintaining continuous network uptime. This feature is critical in enterprise and hyperscale data centers where downtime can have significant operational and financial impacts. Hot-swappable capability simplifies maintenance, upgrades, and network expansion, enabling IT teams to manage infrastructure efficiently while minimizing service disruption.

Networking and Scalability

The Solarflare SOLR-SFM40G-SR4 QSFP+ transceiver module is engineered to support future networking requirements, providing scalable 40GbE connectivity that can evolve with enterprise infrastructure needs. The module’s compatibility with multimode fiber and support for high-density QSFP+ ports allows enterprises to expand network capacity without major rewiring or infrastructure overhaul. Its adherence to open standards ensures interoperability with emerging network technologies, providing a future-proof solution for evolving data center requirements.

Multimode Fiber Connectivity

The Solarflare SOLR-SFM40G-SR4 40GBASE-SR4 QSFP+ transceiver is designed specifically to maximize the performance of multimode fiber networks within high-density data center environments. Utilizing parallel optics technology with four separate lanes, the module splits the 40GbE signal into four 10GbE channels, each operating at 850nm wavelength. This approach provides superior signal integrity and minimizes latency across short-range connections, ensuring stable communication between servers, storage arrays, and aggregation switches. In top-of-rack and end-of-row deployments, these transceivers allow for dense port configurations while maintaining excellent performance, enabling organizations to expand network capacity without significant physical infrastructure changes.

High-Performance Computing and Financial Applications

Latency-sensitive applications benefit greatly from the low-latency design of the SOLR-SFM40G-SR4. In high-performance computing (HPC) clusters, where rapid data exchange between nodes is critical for parallel processing and complex simulations, this transceiver ensures minimal signal propagation delay. Financial services environments, including algorithmic and high-frequency trading, also leverage the module’s low-latency characteristics to reduce transaction execution times, thereby providing a competitive advantage in trading operations. The combination of low-latency optics and high bandwidth makes this module ideal for environments where microseconds can impact performance outcomes.

High-Density Deployments

The SOLR-SFM40G-SR4 is engineered with energy efficiency in mind, consuming minimal power while delivering 40GbE performance. This low-power design reduces heat generation within network switches and minimizes the need for extensive cooling infrastructure. In high-density switch chassis or racks populated with multiple transceivers, efficient thermal management ensures that devices operate reliably under continuous 24/7 conditions. The combination of low power consumption and thermal stability makes this transceiver suitable for enterprise and hyperscale data centers where power and cooling efficiency are critical operational metrics.

Comprehensive Monitoring and Diagnostics

The SOLR-SFM40G-SR4 QSFP+ transceiver supports advanced diagnostic features that allow administrators to monitor link status, optical power levels, temperature, and signal quality in real time. These diagnostic tools enable proactive identification of potential network issues, such as degraded fiber links or signal loss, allowing IT teams to take corrective action before service degradation occurs. The monitoring capabilities also facilitate preventive maintenance planning, reducing unexpected downtime and ensuring consistent network reliability.

Scalable Network Infrastructure

The Solarflare SOLR-SFM40G-SR4 QSFP+ transceiver is designed to support scalable 40GbE networks, enabling enterprises to expand capacity as business demands grow. Its standardized QSFP+ form factor and IEEE 802.3ba compliance ensure broad interoperability with network switches, NICs, and existing fiber infrastructure. This allows organizations to implement future-proof deployments without requiring proprietary solutions, ensuring seamless integration into evolving network architectures. By supporting high-density, multi-lane fiber connections, the transceiver provides a flexible foundation for building scalable network backbones capable of handling increasing traffic volumes and emerging high-bandwidth applications.

Reliability and Enterprise-Grade Deployment Features

The SOLR-SFM40G-SR4 module is engineered for enterprise-grade reliability, with robust components and rigorous quality standards that ensure consistent performance under demanding conditions. The transceiver’s mechanical and optical design maintains signal integrity under physical stress and vibration, making it suitable for deployment in high-density racks, top-of-rack switches, and data center core environments. Additionally, its hot-swappable capability enables serviceability without disrupting network operations, allowing IT staff to replace or upgrade transceivers quickly while maintaining uptime.

Interoperability with Solarflare Network Interface Cards and Switches

The SOLR-SFM40G-SR4 transceiver is fully interoperable with Solarflare NICs and compatible network switches, enabling optimized end-to-end 40GbE connectivity. This compatibility ensures seamless integration into existing network deployments, allowing enterprises to maintain performance consistency and reduce configuration complexity. Interoperable deployments also simplify inventory management, reduce the risk of incompatibility, and facilitate rapid network scaling in both enterprise and hyperscale data centers.

Application Use Cases and Strategic Deployment Scenarios

The Solarflare SOLR-SFM40G-SR4 QSFP+ transceiver is widely used in high-performance data center environments, enterprise campus networks, storage area networks, and high-frequency trading platforms. Its low-latency performance and high-density connectivity make it ideal for HPC clusters, virtualized environments, and cloud infrastructure requiring rapid data transfer between servers and storage nodes. Additionally, the module supports real-time analytics applications and big data processing platforms where predictable performance and minimal network congestion are critical. The SOLR-SFM40G-SR4 provides a strategic advantage for enterprises seeking to maximize data center throughput, optimize network resource utilization, and deliver scalable, high-performance networking solutions.