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Home Networking Cisco QDD-400-CU1M 400G QSFP-DD Passive Copper Cable 1m

Cisco QDD-400-CU1M 400G QSFP-DD Passive Copper Cable 1m

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Ultra-short reach 400G passive direct attach copper cable designed for high-density rack environments, delivering stable low-latency connectivity over 1-meter distance.

OVERVIEW

  • The Cisco QDD-400-CU1M is a high-performance 400G QSFP-DD passive direct attach copper cable designed for ultra-short distance, high-bandwidth connectivity in modern data center environments. It enables reliable 400Gbps transmission over a 1-meter copper link, making it ideal for tightly packed rack systems.
  • Engineered for efficiency, it provides a cost-effective, zero-power alternative to optical solutions while maintaining stable and low-latency performance for hyperscale and enterprise networks.

USE CASES

  • Ultra-short rack-to-rack 400G interconnects
  • High-density switch-to-server connections
  • Leaf-spine architecture inside data centers
  • Cloud and hyperscale computing environments
  • High-performance computing (HPC) clusters
  • Low-latency enterprise networking setups

KEY FEATURES

  • Supports ultra-high 400Gbps data transmission
  • Passive direct attach copper (DAC) technology
  • 1-meter ultra-short reach design for tight racks
  • Zero power consumption (no optical components)
  • Cost-efficient alternative to fiber optic cables
  • QSFP-DD high-density interface
  • Optimized for low-latency performance
  • Hot-swappable Cisco-compatible design

TECHNICAL SPECIFICATIONS

  • Brand: Cisco
  • Model: QDD-400-CU1M
  • Data Rate: 400Gbps
  • Cable Type: Twinax Copper (Passive DAC)
  • Length: 1 meter
  • Connector Type: QSFP-DD to QSFP-DD
  • Application: Data center, cloud infrastructure, enterprise networking
  • Compatibility: Cisco networking platforms
  • Deployment: Ultra-short reach intra-rack connectivity
  • Power Consumption: Zero (passive design) 

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