Cisco Genuine QSFP-40G-LR4-S 40GBASE QSFP+ LR4 1310nm 10km LC Duplex Transceiver 10-3115-01 The Cisco QSFP-40G-LR4-S is a genuine, high-performance 40GBASE-LR4 QSFP+ transceiver module designed for data centers, high-performance computing networks, enterprise core, and distribution layer applications. It supports link lengths of up to 10 kilometers over standard single-mode fiber (SMF) using duplex LC connectors.This module converts 4 input channels of 10Gbps electrical data to 4 optical signals, multiplexing them into a single channel for 40Gbps optical transmission via WDM (Wavelength Division Multiplexing). As a Cisco S-Class module, it offers enterprise networks an optimized balance of cost, maximum uptime, and uncompromised reliable performance.
Model / Product Code
QSFP-40G-LR4-S
Wavelength
1310nm (CWDM: 1271, 1291, 1311, 1331nm)
DOM (Digital Monitoring)
Supported
Tx Power
-7.0 to +2.3 dBm
Rx Power
-11.5 to +2.3 dBm
Operating Temperature
0°C ~ 70°C
Typical Applications - Data Center Interconnections (DCI) up to 10 km
- Enterprise Campus and Backbone 40G Long-Reach Links
- Service Provider 40G Aggregation and Transport Networks
- Cisco QSFP+ Port Switch/Router 40G Uplink Ports
- High-Capacity Regional Network Expansion Projects
Product Highlights
1. 10 km Long-Reach 40G Solution with Rock-Solid Reliability
- Enriched: Engineered for extended distances, this module delivers 40Gbps high-speed connectivity up to 10 km over standard Single-Mode Fiber (SMF). It serves as an ideal, rock-solid solution for regional data center interconnections (DCI), multi-building campus infrastructures, and long-haul enterprise backbone networks.
2. Advanced CWDM Technology for Maximum Fiber Efficiency
- Utilizing 4 CWDM grid wavelengths (1271, 1291, 1311, and 1331 nm) multiplexed onto a single fiber pair, it delivers an aggregated 40 Gbps bandwidth. This advanced multiplexing technology maximizes your existing fiber utilization and drastically reduces cabling infrastructure costs for long-reach applications.
3. Industry-Standard LC Duplex Interface for Seamless Deployment
- Equipped with a standard LC duplex connector, this transceiver offers universal compatibility with existing single-mode fiber networks. It eliminates the need for specialized or proprietary cabling, significantly simplifying network deployment and reducing installation time.
4. Compact QSFP+ Form Factor for High Port Density
- The hot-swappable, compact QSFP+ form factor supports high-density configurations in modern switches and routers. It allows network administrators to efficiently scale 40G uplinks and optimize rack space utilization without needing to power down the network equipment.
5. 100% Genuine Cisco Compliance & Real-Time DDM/DOM
- As a 100% genuine Cisco S-Class product, it is fully compliant, verified, and optimized for Cisco Catalyst, Nexus, and routing platforms. It features built-in Digital Diagnostics Monitoring (DDM/DOM) to provide real-time tracking of critical metrics, including internal temperature, supply voltage, laser bias current, and optical TX/RX power.