StarTech.com Cisco QSFP-40G-SR4 Compatible QSFP+ Module

Experience reliable, high-performance 40 Gigabit Ethernet connectivity with the StarTech.com Cisco QSFP-40G-SR4 Compatible QSFP+ Module. This 40GBASE-SR4 transceiver is engineered to deliver robust, scalable uplinks over Multimode Fiber (MMF) for data centers and enterprise networks that demand fast, consistent data transfer. Designed, programmed, and tested to work seamlessly with Cisco brand switches and routers, it provides a plug-and-play, cost-effective alternative to OEM modules without compromising on quality or performance. Whether you’re upgrading an existing 10G network or building a new 40G fabric, this QSFP+ SR4 transceiver is built to handle the rigors of busy networks while maintaining interoperability and reliable link integrity.

• 40GBASE-SR4 over Multimode Fiber (MMF): This transceiver delivers 40 Gigabit Ethernet using 850 nm VCSEL technology in a QSFP+ form factor. It is optimized for short-reach MMF links and is ideal for data centers and campus backbones that rely on high-density 40G connectivity over fiber cabling. The SR4 designation means four parallel lanes of 10 Gbps each, enabling high throughput across MMF networks with efficient use of fiber resources.
• Cisco QSFP-40G-SR4 Compatibility: Specifically designed, programmed, and tested to work with Cisco switches and routers that support 40GBASE-SR4. This ensures seamless interoperability, stable link performance, and predictable behavior in Cisco-centric network environments. The module is a trusted choice for organizations looking to maintain Cisco-style reliability while leveraging third-party transceivers.
• Plug-and-Play Installation: The transceiver is hot-swappable and requires no additional drivers or complex configuration. Simply insert the module into a compatible QSFP+ slot, connect your MMF trunk cables to the MPO/MTP connectors, and power up. Once installed, the device should automatically negotiate link performance with the partner device, delivering a straightforward and efficient upgrade path to 40G.
• Quality Build for Demanding Networks: Built to meet high industry standards, this StarTech.com transceiver is subjected to rigorous testing to ensure consistent performance in the field. The robust construction and adherence to compatibility benchmarks provide dependable operation in rack-mounted enclosures, data centers, and enterprise networks where uptime and reliability matter most.
• Cost-Effective Performance with Cisco-Grade Reliability: Unlock a budget-friendly alternative to OEM modules while preserving the reliability and performance required for mission-critical networks. The StarTech.com QSFP-40G-SR4 module offers a favorable return on investment for large-scale deployments, with predictable behavior, easy procurement, and compatibility with Cisco-based 40G networking architectures.

Technical Details of StarTech.com Cisco QSFP-40G-SR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GE MMF Transceiver

• Form Factor: QSFP+ (Quad Small Form-factor Pluggable Plus)
• Data Rate: 40 Gb/s (40GBASE-SR4)
• Fiber Type: Multimode Fiber (MMF)
• Wavelength: 850 nm (VCSEL)
• Connector: MPO/MTP
• Compatibility: Cisco QSFP-40G-SR4 compatible; tested for interoperability with Cisco switches and routers
• Operating Environment: Standard commercial ranges suitable for data center and enterprise deployments
• Power Requirements: Typical power characteristics as specified by transceiver standards; exact figures may vary by revision

how to install StarTech.com Cisco QSFP-40G-SR4 Compatible QSFP+ Module

Installing this QSFP+ transceiver is designed to be straightforward and fast, minimizing downtime during upgrades or expansions. Follow these steps to ensure a clean, reliable installation and optimal performance:

• Power down the host device or ensure the switch/router ports are safely powered off before insertion to prevent any static discharge or signal disruption.
• Identify an available QSFP+ slot that supports 40GBASE-SR4 and is compatible with the StarTech.com transceiver. Remove any protective covers and prepare the MMF fiber cables for connection.
• Slide the QSFP+ module into the slot firmly until you hear or feel a secure click, indicating that the module is properly seated. Avoid excessive force to prevent damage to the connector or the slot.
• Connect your Multimode Fiber (MMF) trunk to the MPO/MTP connectors on the transceiver, ensuring correct fiber polarity and careful cable management to avoid strain or bending that could affect signal integrity.
• Power up the device and verify the link status using the management interface or CLI. Look for an active 40G connection and confirm that the port recognizes the SR4 link with the expected speed and duplex settings.

Frequently asked questions

• Q: Is this module compatible with Cisco QSFP-40G-SR4 devices? A: Yes. It is designed and tested to be Cisco QSFP-40G-SR4 compatible, ensuring reliable operation with Cisco switches and routers that support 40GBASE-SR4.
• Q: What type of fiber is used? A: It uses Multimode Fiber (MMF) with MPO/MTP connectors, optimized for short-reach data-center deployments typical of 40GBASE-SR4 networks.
• Q: Do I need drivers or special software? A: No. This transceiver is hot-swappable and generally requires no additional drivers; it relies on standard networking interfaces and device recognition on Cisco platforms.
• Q: Can it work with non-Cisco equipment? A: While designed for Cisco environments, some non-Cisco devices that support 40GBASE-SR4 over QSFP+ may recognize the module. Always verify compatibility with the target vendor's guidelines before deployment.
• Q: How do I know if the link is functioning properly after installation? A: Verify the port status in the device’s management interface (or CLI) to confirm a stable 40G link, check LED indicators on the switch, and run basic traffic tests to ensure throughput meets expectations. If issues arise, recheck fiber polarity, cabling integrity, and slot compatibility.