Description
The Cisco QSFP-40G-LR4-S is an enterprise-class 40GBASE-LR4 QSFP transceiver designed for high-performance, long-reach optical connectivity. Supporting distances of up to 10 kilometers over single-mode fiber, this module delivers reliable 40-Gigabit Ethernet performance for data center, enterprise core, and service provider environments.
Operating at a 1310 nm wavelength with four multiplexed lanes, the QSFP-40G-LR4-S uses a duplex LC connector to provide efficient, high-density connectivity while maintaining low power consumption. Hot-swappable and engineered for seamless integration with Cisco networking platforms, this transceiver ensures consistent performance, stability, and scalability for mission-critical network deployments.
| Specification | Details |
|---|---|
| Product Type | QSFP+ Optical Transceiver |
| Data Rate | 40 Gbps |
| Ethernet Standard | 40GBASE-LR4 |
| Wavelength | 1310 nm |
| Fiber Type | Single-Mode Fiber (SMF) |
| Maximum Distance | Up to 10 km |
| Connector Type | Duplex LC |
| Optical Lanes | 4 (WDM) |
| Form Factor | QSFP |
| Hot-Swappable | Yes |
| Application | Data Center, Enterprise, Service Provider |
| Class | Enterprise-Class |
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
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