Product Type | QSFP+ Transceiver Module |
Form Factor | Plug-in module |
Data Rate | 40 Gbps |
Wavelength | 1310 nm |
Fiber Type | Single-mode fiber (SMF) |
Maximum Reach | 40 km |
Supported Ethernet Standard | 40GBASE-ER4 |
Hot Swappable | Yes |
OTN Compatibility | OTU-3 |
MTBF | 1,600,000 hours |
Power Consumption | 4.5 W (maximum) |
Digital Optical Monitoring (DOM) | Yes |
Warranty | 5 years |
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
Product Overview
Physical & Environmental
Dimensions (WxDxH) | 72.4 mm x 18.4 mm x 8.5 mm |
Weight | 0.075 kg |
Operating Temperature | 0°C to 70°C (32°F to 158°F) |
Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
Operating Humidity | 5% to 85% non-condensing |
Storage Humidity | 5% to 95% non-condensing |
Case Temperature Monitoring | Yes |
Cloud Management & Licensing
Cloud Managed | No |
Licensing Required | No |
Interfaces
Interface | QSFP+ |
Connector Type | LC Duplex |
Host Interface | 4x 10G lanes |
LAN WDM | Yes (4 channels around 1310 nm) |
Compliance & Origin
Country of Origin | China / Japan / Malaysia |
TAA Compliant | Yes |
RoHS Compliance | Yes |
EMC Standards | FCC Part 15 Class A, EN 55032 Class A, VCCI Class A |
Laser Safety | Class 1 (IEC 60825-1) and FDA 21 CFR 1040.10 and 1040.11 |
Safety Standards | UL 60950-1, CAN/CSA-C22.2 No. 60950-1 |
Compliant Standards | IEEE 802.3bm, SFF-8636, SFF-8665 |
Advanced Security Features
Data Encryption Support | No |
Secure Boot Feature | No |