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Home Networking Cisco QDD-400-CU3M 400G QSFP-DD Passive Copper Cable 3m

Cisco QDD-400-CU3M 400G QSFP-DD Passive Copper Cable 3m

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High-performance 400G passive direct attach copper cable designed for short-reach data center connectivity with 3-meter length, delivering ultra-low latency and cost-efficient networking.

OVERVIEW

  • The Cisco QDD-400-CU3M is a 400G QSFP-DD passive direct attach copper cable engineered for efficient short-range connectivity in modern data centers. It supports 400Gbps high-speed transmission over a 3-meter copper link, making it ideal for rack-to-rack and adjacent equipment interconnections.
  • This cable provides a cost-effective and power-efficient alternative to optical solutions while maintaining stable performance for high-bandwidth networking environments.

USE CASES

  • Rack-to-rack 400G server interconnects
  • High-density switch-to-switch connections
  • Data center leaf-spine short-reach links
  • Cloud and hyperscale infrastructure networks
  • High-performance computing (HPC) clusters
  • Enterprise backbone short-distance links

KEY FEATURES

  • Supports ultra-high 400Gbps data transmission
  • Passive direct attach copper (DAC) design
  • 3-meter optimized short-reach connectivity
  • Low power consumption (no optical components)
  • Cost-efficient alternative to fiber optics
  • QSFP-DD high-density form factor
  • Reliable low-latency performance
  • Plug-and-play Cisco-compatible design

TECHNICAL SPECIFICATIONS

  • Brand: Cisco
  • Model: QDD-400-CU3M
  • Data Rate: 400Gbps
  • Cable Type: Twinax Copper (Passive DAC)
  • Length: 3 meters
  • Connector Type: QSFP-DD to QSFP-DD
  • Application: Data center, cloud infrastructure, enterprise networking
  • Compatibility: Cisco networking systems
  • Deployment: Short-reach intra-rack/inter-rack connectivity
  • Power Consumption: Zero optical power (passive design)

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