Cisco Compatible 400GBASE-LR4 QSFP-DD 400G 1310nm 10km DOM LC SMF Transceiver Module
#201001
SKU: 400G-QDD-LR4
1 Reviews
Transceiver Types:
Stock:
3000 in stock
Total Price:
$659
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Free shipping for orders over $99
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Available for delivery within 2 days
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3-year warranty
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30-day return and refund
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Lifetime technical support
Products Highlight
- Max Power Consumption < 9W
- Compliant with Hot Pluggable QSFP-DD MSA, CMIS 5.2 Standard
- High-speed Connectivity Compliant to IEEE 802.3db
- Complies with Class 1 FDA Laser Safety Standards
- Compliant with RoHS Environmental Protection Standards (Lead-Free)
- Supports Digital Diagnostic Monitoring Functionality
- After Rigorous Quality Control and Stability Testing
- Specifications
- Features
- Applications
- Testing
- Resources
- FAQs
- Reviews
Specifications
Product Certification
Features
The 400G-QDD-LR4 is a high-performance, single-mode optical transceiver module designed for 400 Gigabit Ethernet applications. It supports data rates of up to 425 Gbps and is optimized for long-reach communication, with a maximum transmission distance of up to 10 kilometers over SMF. This QSFP-DD module operates using four wavelengths (1271nm, 1291nm, 1311nm, and 1331nm) multiplexed into a single duplex LC interface, making it ideal for high-speed data center interconnects, enterprise networks, and telecommunications infrastructure. The 400G-QDD-LR4 is fully compliant with IEEE 802.3bs and 400GAUI-8 standards, ensuring reliable and efficient data transmission.
Applications
400G Direct Connection

Quality Testing Program
01. Product Hardware
02. Compatibility Testing
03. Quality Control
Model Comparison
Form Factor | QSFP-DD | QSFP-DD | QSFP-DD |
Max Data Rate | 425Gbps | 425Gbps | 425Gbps |
Wavelength | 1310nm | 1310nm | 1310nm |
Max Cable Distance | 10km | 2km | 40km |
Media | SMF | SMF | SMF |
Connector | Duplex LC | Duplex LC | Duplex LC |
Transmitter Type | CWDM EML | CWDM EML | LWDM EML |
Receiver Type | PIN | PIN | SOA PIN |
Resource
FAQs
What is the difference between QDD-LR4 and Q112-LR4?
Is there any requirement for the switch to use this module?
What practical difference using 4x100 vs 8x50 of 400G QSFP-DD transceivers?
Is the module compatible with OSFP LR4 modules?
Customer Reviews
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Received the 400G-QDD-LR4 modules last week and installed them right away. They have been working fine since connecting to our Cisco switch.