Brand: Cisco · SKU: QSFP-40G-LR4-S · MPN: QSFP-40G-LR4-S · Category: Networking
The Cisco 40GBASE-LR4 QSFP module is a hot-swappable, high-density transceiver designed for 40 Gigabit Ethernet connectivity in data centers, high-performance computing networks, and enterprise-level distribution layers. This S-Class module supports link lengths of up to 10 kilometers over standard G.652 single-mode fiber (SMF) using duplex LC connectors. It operates by multiplexing four independent transmit and receive channels into a single 40Gbps link using CWDM technology (wavelengths: 1271, 1291, 1311, and 1331 nm). As an S-Class module, it is optimized for 40G Ethernet applications and is fully compliant with IEEE 802.3ba 40GBASE-LR4 standards.
| Data Rate | 40 Gbps |
|---|---|
| Fiber Type | Single-Mode Fiber (SMF) |
| Monitoring | Digital Optical Monitoring (DOM/DDM) |
| Wavelength | 1310nm (CWDM: 1271, 1291, 1311, 1331nm) |
| Form Factor | QSFP+ |
| Max Distance | 10 km |
| Connector Type | LC Duplex |
| Power Consumption | 3.5W |
| Warranty | 1-Year Limited Warranty |
| Weight | 3.53 oz |
| Dimensions | 13.5 x 18.4 x 72.4 mm |
The Cisco QSFP-40G-LR4-S provides a cost-effective 40G solution for long-reach applications. It utilizes four lanes of traffic at 10Gbps each, combined via CWDM to provide a total throughput of 40Gbps over 10km of fiber.
Yes, this Cisco 40GBASE-LR4 QSFP Module for SMF (QSFP-40G-LR4-S) is 100% genuine Cisco hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Cisco 40GBASE-LR4 QSFP Module for SMF includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the QSFP-40G-LR4-S.