| Device Type | Transceiver |
| Form Factor | QSFP |
| Cabling Type | SMF |
| Data Transfer Rate | 40 Gbps |
| Wave Length | 1310 nm |
| Max Transfer Distance | 40 Km |
| Interfaces | LC |
Cisco QSFP-40G-ER4 40GBASE-ER4 Transceiver Module, LC, 40KM

Key Benefits
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- Enables long-distance 40G Ethernet connections up to 40KM, ideal for large-scale deployments
- TAA compliance ensures suitability for federal and public sector projects
- Backed by a five-year warranty, reducing long-term maintenance concerns
Product Overview
The Cisco QSFP-40G-ER4 transceiver module is engineered for high-speed 40 Gigabit Ethernet connectivity over long distances. Utilizing a 1310 nm wavelength and compliant with the 40GBASE-ER4 standard, it delivers data transmission up to 40 kilometers via single-mode fiber (SMF). The module features LC connectors and supports OTU-3 rates—enabling compatibility with optical transport networking environments while ensuring seamless integration in existing infrastructure.
Manufactured in China, Japan, or Malaysia and adhering to TAA compliance, this robust networking component is designed for commercial and government use, offering both performance and reliability. With a 5-year warranty and long-reach capabilities, the QSFP-40G-ER4 is suitable for data center interconnects, carrier backbones, and high-capacity enterprise networks. The hot-swappable module simplifies upgrades and maintenance, minimizing downtime in mission-critical systems.
Organizations looking to extend network reach without sacrificing throughput will appreciate the durability and performance of this Cisco transceiver. Its compliance with industry standards and long-term support make it a dependable choice for scalable network growth.
Specifications
Primary Information
Dimensions&Miscellaneous
| Width | 18.4 Mm |
| Depth | 72.4 Mm |
| Height | 13.5 Mm |
Special Feature
| RoHS | Y |
| COO | CHINA / JAPAN / MALAYSIA |
| TAA compliance | Yes |
Networking
| Data Link Protocol | Gigabit Ethernet |
Service&Support
| Service & Support Type | 5 years warranty |
UNSPSC Code
| UNSPSC Code | 43222608 |