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.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.