Cisco QSFP-400G-DR4-BD 400GBASE-DR4 Breakout Transceiver

The Cisco QSFP-400G-DR4-BD is a 400 Gigabit Ethernet breakout transceiver implementing the 400GBASE-DR4 standard over a single multimode fiber (MMF) link. Designed for high-density, short-reach intra-datacenter connectivity, it delivers four independent 100G channels over OM5 fiber at distances up to 500 meters, enabling efficient fabric scaling without requiring parallel fiber runs.

This transceiver integrates advanced signal conditioning and equalization to maintain signal integrity across extended MMF distances, supporting the thermal and power profiles demanded by modern hyperscale and AI-accelerated compute clusters. The QSFP-DD form factor provides maximum port density on Nexus 9000 series platforms and other enterprise-class switches, critical for infrastructure buildouts where fabric throughput density directly impacts GPU cluster performance and training pipeline efficiency.

The DR4-BD variant is optimized for datacenter-scale deployments, offering superior optics quality and manufacturing consistency for mission-critical fabric roles. It integrates seamlessly with Cisco's 400G ecosystem and supports standard digital diagnostic monitoring (DDM) for operational visibility.

Ideal for

• High-density 400G intra-datacenter fabric interconnect for AI/ML GPU cluster topologies
• Large-scale data warehouse and analytics platforms requiring ultra-low-latency tier-1 switching
• Hyperscale cloud infrastructure expansion with multi-node high-performance compute clusters
• Enterprise machine learning and deep learning training environments requiring sustained multi-Terabit throughput
• High-frequency trading and financial services datacenter fabric refresh for reduced network latency
• Video streaming and content delivery network (CDN) backbone infrastructure with 400G fabric requirements

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.