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Home Networking Cisco QDD-400-CU2M 400G QSFP-DD Passive Copper Cable 2m

Cisco QDD-400-CU2M 400G QSFP-DD Passive Copper Cable 2m

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High-speed 400G passive direct attach copper cable designed for short-range rack-to-rack connectivity in data centers with ultra-low latency and cost-efficient performance.

OVERVIEW

  • The Cisco QDD-400-CU2M is a high-performance 400G QSFP-DD passive direct attach copper (DAC) cable designed for short-distance, high-bandwidth connectivity. It delivers reliable 400Gbps data transmission over a 2-meter copper link, making it ideal for intra-rack and adjacent rack connections in modern data centers.
  • Built for efficiency and low latency, it reduces power consumption compared to optical solutions while maintaining stable high-speed performance for cloud and enterprise networking environments.

USE CASES

  • Rack-to-rack 400G server interconnects
  • Data center leaf-spine short-reach links
  • High-density switch-to-switch connections
  • Cloud infrastructure and hyperscale networks
  • Low-latency compute cluster networking
  • Enterprise core switching environments

KEY FEATURES

  • Supports ultra-fast 400Gbps data transmission
  • Passive direct attach copper (DAC) design
  • 2-meter short-reach high-speed connectivity
  • Low power consumption (no optical components)
  • Cost-efficient alternative to fiber optics
  • QSFP-DD high-density form factor
  • Optimized for data center rack environments
  • Plug-and-play compatibility with Cisco systems

TECHNICAL SPECIFICATIONS

  • Brand: Cisco
  • Model: QDD-400-CU2M
  • Data Rate: 400Gbps
  • Cable Type: Twinax Copper (Passive DAC)
  • Length: 2 meters
  • Connector Type: QSFP-DD to QSFP-DD
  • Application: Data center, server interconnect, cloud networking
  • Compatibility: Cisco networking platforms
  • Deployment: Short-reach intra-rack connectivity
  • Power Consumption: Zero optical power (passive design)
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