Cisco
QSFP-DD 400G-DR4 400G Single-Mode Fiber Optic Transceiver
QSFP-DD 400G-DR4 400G Single-Mode Fiber Optic Transceiver
Couldn't load pickup availability
- Free Ground Shipping Over $300
 - Industry-Leading 10 Year Warranty
 - Same Day Shipping Before 4PM EST
 
We clean up after ourselves.
Ecommerce deliveries have a carbon footprint. That's why we support verified projects that remove carbon from the air.
Every delivery’s carbon footprint is calculated based on weight, shipping method, and distance traveled. We neutralize these emissions by purchasing verified carbon removal credits from groundbreaking projects.
                    
                    With your purchase, you’ll join a community of proactive merchants and customers dedicated to a sustainable future. Together, we've removed emissions for over 67 million deliveries and removed over 48 thousand tonnes of carbon.
We work with a network of pioneering carbon removal companies that have been vetted by the commerce platform Shopify.
                    The QSFP-DD 400G-DR4 delivers long-reach 400 Gigabit connectivity for distributed AI infrastructure over single-mode fiber. This transceiver extends 400G networks up to 500 meters using standard duplex LC connectors, perfect for inter-building and campus AI deployments.
Deploy the DR4 for connecting AI clusters across data center rows, between buildings, or within large campus environments. Four 100G wavelengths over duplex fiber simplify cabling compared to parallel optics while delivering breakthrough bandwidth.
Critical for organizations scaling AI infrastructure beyond single facilities. Enables distributed training across sites, connects remote GPU pools to central storage, and supports disaster recovery architectures for AI workloads.
Key Benefits:
- 500m reach connects distant AI infrastructure
 - Duplex LC connectors simplify deployment
 - Single-mode fiber for maximum reliability
 - Four wavelengths optimize fiber utilization
 - Compatible with existing structured cabling
 
Professional installation services available. Bulk pricing for large fabric deployments.
UPC:
PN: QSFP-DD-400G-DR4

Reef Telecom Proudly Supports
- 
            
                  Ocearch
2025 Monthly Shark Hero - 
            
                  Coral Restoration Foundation
2024 Staghorn Donor - 
            
                  Ocean Conservancy
2024 Donor 
    Reef Telecom: Quality IT Solutions at Tide-Turning Prices.
Our goal is providing the highest quality refurbished equipment to promote environmentally-conscious equipment usage through it's lifecycle.