Brand: Cisco · SKU: QDD-400G-LR4-S · MPN: QDD-400G-LR4-S · Category: Networking
The Cisco QDD-400G-LR4-S is a high-performance 400GBASE-LR4 QSFP-DD (Quad Small Form-Factor Pluggable Double Density) optical transceiver module designed for 400 Gigabit Ethernet links reaching up to 10km over single-mode fiber (SMF). This transceiver utilizes 4-level Pulse Amplitude Modulation (PAM4) and a CWDM4 wavelength grid (1271, 1291, 1311, and 1331 nm) to aggregate 400 Gbps of bandwidth. It is equipped with a duplex LC connector and supports Digital Optical Monitoring (DOM) for real-time diagnostic data. Compliant with IEEE 802.3bs and the QSFP-DD Multi-Source Agreement (MSA), it is ideal for data center interconnects, enterprise core networks, and high-performance computing environments.
| Data Rate | 400 Gbps |
|---|---|
| Cable Type | Single-Mode Fiber (SMF) |
| Compliance | IEEE 802.3bs, QSFP-DD MSA, RoHS |
| Modulation | PAM4 |
| Wavelength | 1310nm (CWDM: 1271, 1291, 1311, 1331nm) |
| Form Factor | QSFP-DD |
| Max Distance | 10 km |
| Connector Type | Duplex LC |
| Power Consumption | ≤10W |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Warranty | 1-Year Limited Warranty |
| Weight | 0.04 kg |
| Dimensions | 0.72 x 0.33 x 3.52 inches |
The Cisco QDD-400G-LR4-S module provides ultra-high-density 400G connectivity for long-reach applications. It is designed to work seamlessly with Cisco's high-end switches and routers, offering a scalable and energy-efficient solution for evolving network architectures.
Yes, this Cisco 400GBASE-LR4 QSFP-DD Transceiver (QDD-400G-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 400GBASE-LR4 QSFP-DD Transceiver 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 QDD-400G-LR4-S.