Lenovo ThinkSystem Finisar Dual Rate 10G/25G SR SFP28 Transceiver

For data centers that demand flexible, scalable fiber connectivity, the Lenovo ThinkSystem Finisar Dual Rate 10G/25G SR SFP28 Transceiver delivers outstanding performance in a compact, hot-swappable form factor. This single-module solution supports both 10GBase-SR and 25GBase-SR over multimode fiber, enabling seamless upgrades from 10G to 25G workloads without retooling your entire network. Designed to pair with Lenovo ThinkSystem servers and switches, this transceiver provides reliable, low-latency connectivity for dense rack deployments, spine-and-leaf architectures, and hyper-converged infrastructures. Its SR optics are optimized for multimode fiber, using 850 nm VCSEL technology to maximize throughput while minimizing power consumption, heat output, and cable footprint. Whether you are expanding capacity, extending reach within data center racks, or preparing for future-proofed uplinks, the ThinkSystem Finisar SFP28 transceiver is engineered to deliver consistent performance and straightforward management across a broad range of Lenovo and third-party networking environments.

• Dual-Rate Flexibility: The SFP28 transceiver supports both 10GBase-SR and 25GBase-SR in a single plug-in module. This dual-rate capability provides a cost-effective upgrade path for data centers migrating from legacy 10G to higher-bandwidth 25G networking. By retaining the familiar SFP28 form factor, it simplifies inventory management and reduces the need for new optics when expanding capacity. Whether you’re upgrading uplinks, server-to-switch connections, or storage access, this module helps you scale without overhauling your existing cabling and port allocations.
• High-Performance SR Optics: Built around fine-tuned 850 nm short-range technology, the transceiver delivers reliable multimode fiber links with low bit-error rates. The SR (short-reach) design is optimized for connections within a data center environment, delivering strong performance for typical intra-building and intra-rack deployments. The optics are engineered to maintain signal integrity across standard data-center fiber runs, ensuring stable links even as traffic patterns shift with workload changes and virtualization.
• Multimode Fiber Compatiblity (OM3/OM4): The transceiver is designed for multimode fiber (MMF) with LC duplex connectors, commonly used in modern data centers. It supports reach up to approximately 300 meters on OM3 MMF and up to around 400 meters on OM4 MMF, making it an ideal choice for midrange to large-scale deployments where higher-density fiber layouts are common. This compatibility offers a practical balance between cost, performance, and installation flexibility while reducing the need for longer, more expensive single-mode deployments in certain intra-data-center segments.
• Plug-and-Play Deployment: As a hot-swappable, plug-in module, the ThinkSystem Finisar transceiver is designed for rapid deployment with minimal downtime. In most Lenovo ThinkSystem environments, it can be installed or replaced without powering down adjacent components, enabling maintenance windows with greater efficiency. Its robust build quality supports the rigors of busy data centers, including frequent reconfigurations, cabling changes, and routine uplink adjustments, while maintaining a stable and consistent link when the port is active.
• Broad Compatibility and Reliable Support: The transceiver is manufactured to meet Lenovo ThinkSystem standards and is compatible with a wide range of SFP28-enabled devices. This broad compatibility makes it a versatile choice for mixed-vendor networks that still rely on Lenovo infrastructure for servers or switches. Alongside the module, Lenovo and Finisar provide warranty coverage and technical support to help ensure installation goes smoothly and that performance remains consistent over time, reinforcing confidence in scaling your network without unexpected downtime or compatibility issues.

Technical Details of Lenovo ThinkSystem Finisar Dual Rate 10G/25G SR SFP28 Transceiver

• Form Factor: SFP28 plug-in module designed for universal SFP28 ports on Lenovo ThinkSystem hardware and compatible third-party devices.
• Data Rates: Dual-rate support for 10GBase-SR and 25GBase-SR, enabling flexible upgrades and mixed-speed uplinks in a single port family.
• Wavelength: 850 nm, optimized for multimode fiber and short-reach links common in data center networks.
• Fiber Type: Multimode Fiber (MMF), commonly deployed as OM3 or OM4 in modern data centers.
• Connector: LC duplex connector for reliable, low-loss optical connections with standard MMF cables.
• Reach: Typical maximum reach of up to 300 meters on OM3 MMF and up to 400 meters on OM4 MMF, depending on fiber quality and installation conditions.
• Operating Environment: Engineered for data center operation with robust performance and long-term reliability in busy network environments.
• Compatibility: Optimized for Lenovo ThinkSystem servers and switches, with broad cross-vendor compatibility across SFP28 SR implementations when deployed in standard MMF networks.

How to install Lenovo ThinkSystem Finisar Dual Rate 10G/25G SR SFP28 Transceiver

• Verify compatibility: Ensure your Lenovo ThinkSystem device supports SFP28 SR transceivers and that the port is designated for SR optics. Confirm that the fiber run uses multimode fiber (OM3 or OM4) with LC duplex connectors and that the link budget supports the intended 10G/25G operation.
• Power considerations: If your environment requires a maintenance window, plan downtime accordingly. This transceiver is hot-swappable in compatible hardware, but it is good practice to minimize disruption and follow your data-center change control procedures.
• Prepare the fiber: Inspect and clean the LC connectors using proper fiber cleaning tools to remove dust, oils, or contaminants. Use an appropriate bend radius and route cables to avoid strain on connectors and to prevent micro-bends that can degrade signal quality.
• Insert the transceiver: Align the SFP28 transceiver with the port and gently push the module into the slot until it seats firmly. You should feel a tactile click when the module is fully engaged. Do not force the module, and ensure there is no debris in the slot.
• Connect the fiber cable: Attach the LC duplex fiber to the transceiver ports, ensuring proper polarity. Align connectors to prevent accidental misalignment, and secure the fiber with management ties to prevent stress or accidental unplugging during operation.
• Verify link and performance: Power on or re-enable the port and check the port status indicators or management console to confirm a healthy link. Use appropriate network management tools to verify data rates (10G or 25G) and monitor error rates, jitter, and throughput to ensure the uplink meets your required service levels.

Frequently asked questions

• What is the Lenovo ThinkSystem Finisar Dual Rate 10G/25G SR SFP28 Transceiver? It is a hot-swappable, plug-in optical transceiver module that supports both 10GBase-SR and 25GBase-SR over multimode fiber. It is designed for Lenovo ThinkSystem environments and is compatible with a wide range of SFP28-enabled devices, offering flexible bandwidth options in a single optical module.
• What is SR in this context? SR stands for short-range. The 850 nm SR optics are optimized for multimode fiber and short-distance links typical within data centers. This makes the transceiver ideal for intra-building connections, dense server-to-switch uplinks, and other scenarios where short runs are common.
• What fiber type should I use with this transceiver? Use multimode fiber (MMF), preferably OM3 or OM4, with LC duplex connectors. MMF is widely chosen for data-center applications due to cost efficiency and adequate reach for many intra-data-center deployments, while OM4 provides additional headroom for future growth.
• Is this transceiver compatible with non-Lenovo equipment? While designed for Lenovo ThinkSystem platforms, the transceiver is compatible with many SFP28-enabled devices that support SR optics. Always verify compatibility with your network hardware vendor’s interoperability guidelines to avoid any vendor-specific constraints or warranty implications.
• How do I know which speed I am using? Link negotiation and port configuration will indicate whether the connection is operating at 10G or 25G. Most managed network devices provide a status page or CLI command to report current speed and link health. If needed, you can configure speed settings to align with your network design and performance goals.