Description
The Cisco QDD-400G-FR4-S is a QSFP-DD optical transceiver designed to deliver 400 Gigabit Ethernet connectivity over duplex single-mode fiber for high-density enterprise, cloud, and service provider networks. This Cisco QDD-400G-FR4-S module supports 400GBASE-FR4 transmission with a maximum reach of 2 kilometers using LC duplex connectors and CWDM technology. Its hot-swappable design and compact QSFP-DD form factor provide efficient deployment for modern high-bandwidth switching and routing platforms.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Cisco |
| Category |
Networking |
| Part Number |
QDD-400G-FR4-S |
| Subcategory |
QSFP-DD Optical Transceiver |
| Form Factor |
QSFP-DD |
| Ethernet Standard |
400GBASE-FR4 |
| Data Rate |
400 Gbps |
| Fiber Type |
Single-Mode Fiber (G.652 SMF) |
| Maximum Distance |
2 km |
| Connector Type |
Duplex LC |
| Operating Wavelengths |
1271 nm, 1291 nm, 1311 nm, 1331 nm |
| Electrical Interface |
400GAUI-8 |
| Maximum Power Consumption |
12 W |
| Operating Temperature |
0°C to 75°C |
| Storage Temperature |
-40°C to 85°C |
| Compliance |
IEEE 802.3cu, QSFP-DD MSA, 100G Lambda MSA, RoHS |
| Weight |
0.08 lbs |
Information About QDD-400G-FR4-S
The QDD-400G-FR4-S is part of Cisco's 400G QSFP-DD optical transceiver portfolio, developed for next-generation data centers, enterprise core networks, and service provider infrastructures. It utilizes four CWDM optical wavelengths transmitted over a duplex single-mode fiber pair, enabling 400 Gigabit Ethernet communication across distances up to 2 kilometers while reducing fiber requirements compared to parallel optics. The module complies with IEEE 802.3cu 400GBASE-FR4, QSFP-DD MSA, 100G Lambda MSA, and 400GAUI-8 standards to ensure interoperability across supported Cisco networking platforms. Its low-power architecture, hot-swappable installation, and high-density design make it suitable for scalable 400G deployments requiring reliable optical performance and efficient infrastructure expansion.
Key Features:
- 400 Gigabit Ethernet Performance: Supports optical data transmission at up to 400 Gbps.
- QSFP-DD Form Factor: High-density pluggable design optimized for modern switching platforms.
- CWDM4 Optical Technology: Uses four CWDM wavelengths over duplex single-mode fiber.
- Two Kilometer Reach: Supports transmission distances up to 2 km on G.652 single-mode fiber.
- Duplex LC Interface: Utilizes standard LC optical connectors for simplified fiber deployment.
- Hot-Swappable Module: Allows installation and replacement without shutting down network equipment.
- Standards Compliance: Supports IEEE 802.3cu, QSFP-DD MSA, 100G Lambda MSA, and 400GAUI-8.
- Energy-Efficient Design: Operates with low power consumption while maintaining high-speed optical performance.
The QDD-400G-FR4-S delivers the reliability and precision required for high-speed optical networking, enterprise backbone connectivity, and large-scale data center deployments.
