Lenovo QSFP+ Module — 40GBASE-SR4 Optical Transceiver for Data Networking

The Lenovo QSFP+ Module delivers high-density, high-speed 40 Gigabit Ethernet optimization for data centers and optical networks. Designed to meet the demands of modern networks, this transceiver enables reliable 40GBase-SR4 connectivity over multi-mode fiber, making it a smart choice for inter-switch uplinks, server-to-switch links, and spine-leaf architectures. Built with Lenovo’s engineering precision, this QSFP+ transceiver balances performance, interoperability, and ease of deployment, providing an scalable path to future-proof your network infrastructure.

• 40GBASE-SR4 capability — This Lenovo QSFP+ Module delivers a full 40 Gbps data rate across four lanes of 10 Gbps each, enabling high-density uplinks and inter-switch connections. The SR4 standard is optimized for short-reach, multi-mode fiber links in data centers, offering predictable performance for bandwidth-intensive applications, including virtualization, clustering, and real-time data replication. The compact QSFP+ form factor supports tight rack densities while delivering robust, enterprise-grade reliability.

• Multimode fiber compatibility — Engineered for multi-mode fiber networks, it uses an MPO/MTP connector and is optimized for OM3/OM4 fiber types. The 850 nm VCSEL-based transmitter and receiver design provide strong short-range performance, making this module ideal for server-to-switch connections, top-of-rack fabrics, and inter-switch links within a data center. When paired with the appropriate fiber cabling, it adheres to the SR4 reach expectations and supports dense, scalable deployments.

• Plug-and-play compatibility — Crafted for seamless integration with Lenovo data center gear and broad interoperability with other vendors’ QSFP+ ports that support 40GBase-SR4. The module is designed for straightforward installation, with plug-and-play operation and hot-swappable capability on supported devices. This helps minimize downtime during upgrades and simplifies maintenance, while maintaining consistent, enterprise-grade performance across mixed environments.

• Ideal for data center scalability — Enable scalable 40G networking across servers, top-of-rack switches, and core fabrics. The Lenovo QSFP+ Module provides a high-density, low-latency path for bandwidth-heavy workloads, including virtualization, big data analytics, AI inference pipelines, and high-availability database replication. Its reliability and interoperability support smoother migrations and growth without sacrificing performance or manageability.

• Durable, enterprise-grade design — Built to endure continuous operation in demanding data center environments, this module adheres to Lenovo’s stringent quality standards. It is engineered for reliability, tested for interoperability, and designed to work with supported hot-swapping scenarios. The module aims to deliver consistent performance with solid thermal management and minimal downtime, helping keep your network running smoothly at scale.

Technical Details of Lenovo QSFP+ Module

• Data Rate: 40 Gbps
• Standard: 40GBase-SR4
• Form Factor: QSFP+
• Interface/Connector: MPO/MTP multi-fiber connector
• Fiber Type: Multi-Mode Fiber (OM3/OM4 recommended)
• Wavelength: 850 nm
• Distance: Up to 490 ft (150 m) with appropriate fiber
• Hot-Swappable: Yes, on supported devices
• Compatibility: Interoperable with Lenovo data center devices and other vendors’ QSFP+ ports that support 40GBase-SR4

How to Install Lenovo QSFP+ Module

Install the Lenovo QSFP+ Module with care to ensure optimal performance and a reliable link. Follow these steps for a smooth, hassle-free deployment.

• Power down the device or confirm hot-swap compatibility with the chassis or switch before proceeding, as recommended by your equipment vendor.
• Carefully release the existing module from the QSFP+ port by using the module’s latching mechanism, then gently pull straight out to remove.
• Align the Lenovo QSFP+ Module with the port, matching the orientation notch, and slide it in until it is fully seated and the latches engage securely.
• Attach the MPO/MTP fiber optic cable to the module, ensuring proper polarity and that the fiber ends are clean and undamaged. Avoid excessive bending or twisting and maintain the recommended bend radius.
• Power on the device (if required) and verify link status on the host switch or router. Perform a basic connectivity test, such as a ping or a link-light check, to confirm SR4 operation.
• Document the installation, including port name, fiber type, and cable length, to facilitate future maintenance and troubleshooting.

Frequently asked questions

• Q: What is the Lenovo QSFP+ Module used for?
  A: It provides a high-density, 40 Gbps Ethernet link using the SR4 short-range standard, ideal for data center interconnections, uplinks between switches, and server-to-switch connectivity.
• Q: Is it interoperable with non-Lenovo devices?
  A: Yes. As long as the destination port supports QSFP+ SR4 40GBASE-SR4, the module should interoperate with other vendors’ equipment that adheres to the SR4 standard.
• Q: What fiber type should I use?
  A: Multi-Mode fiber is required, with OM3 or OM4 fibers recommended for optimal SR4 performance and reach.
• Q: Can I hot-swap this module?
  A: In most supported devices, this QSFP+ SR4 transceiver is hot-swappable, enabling replacement without powering down the system. Always follow your device’s hot-swap guidelines.
• Q: What is the maximum transmission distance?
  A: Up to 490 feet (approximately 150 meters) on suitable multi-mode fiber, subject to fiber quality and link budget.
• Q: Does this module come with warranty or support?
  A: Lenovo optical modules typically come with a manufacturer warranty and support options. Check the product page or vendor policy for exact terms and coverage.