Brand: Cisco · SKU: QDD-400G-FR4-S · MPN: QDD-400G-FR4-S · Category: Networking
The Cisco QDD-400G-FR4-S is a high-performance 400GBASE-FR4 QSFP-DD (Quad Small Form-Factor Pluggable-Double Density) optical transceiver module designed for high-speed data center interconnects and networking applications. It supports data rates of 400Gbps over a distance of up to 2km using Duplex Single-Mode Fiber (SMF). The module operates by converting 8 channels of 50Gb/s (PAM4) electrical signals into 4 channels of CWDM optical signals (1271nm, 1291nm, 1311nm, 1331nm) and multiplexing them for transmission. It features a duplex LC connector, digital diagnostic monitoring (DDM) support, and is compliant with IEEE 802.3bs, QSFP-DD MSA, and 100G Lambda MSA standards.
| DDM/DOM | Supported |
|---|---|
| Data Rate | 400 Gbps |
| Fiber Type | Single-Mode Fiber (SMF) |
| Modulation | PAM4 |
| Wavelength | 1310nm (CWDM: 1271, 1291, 1311, 1331nm) |
| Form Factor | QSFP-DD |
| Max Distance | 2 km |
| Connector Type | Duplex LC |
| Power Consumption | < 12W |
| Operating Temperature | 0°C to 70°C (32°F to 158°F) |
| Warranty | 1-Year Limited Warranty |
| Weight | 0.08 lbs |
| Dimensions | 0.55 x 0.71 x 3.94 inches |
Cisco 400GBASE-FR4 QSFP-DD modules offer 400-Gigabit Ethernet connectivity for high-density networking. They leverage the QSFP-DD form factor to provide backward compatibility and increased bandwidth for spine-leaf architectures and data center core upgrades.
Network Fabric Engineers
Secure Campus Backbones
"Network Fabric Engineers should consider the QDD-400G-FR4-S for Secure Campus Backbones where consistent throughput and robust connectivity are mandatory."
Yes, this Cisco QDD-400G-FR4-S 400GBASE-FR4 QSFP-DD Transceiver Module (QDD-400G-FR4-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 QDD-400G-FR4-S 400GBASE-FR4 QSFP-DD Transceiver Module 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-FR4-S.