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Home Networking Cisco QDD-400-CU2.5M 400G QSFP-DD Passive Copper Cable 2.5m

Cisco QDD-400-CU2.5M 400G QSFP-DD Passive Copper Cable 2.5m

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High-speed 400G passive direct attach copper cable designed for efficient short-range data center connectivity with optimized 2.5-meter reach for rack-to-rack links.

OVERVIEW

  • The Cisco QDD-400-CU2.5M is a high-performance 400G QSFP-DD passive direct attach copper cable designed for ultra-fast short-range connectivity in modern data center environments. It delivers stable 400Gbps transmission over a 2.5-meter copper link, making it ideal for rack-to-rack and adjacent rack interconnects.
  • Built for efficiency and scalability, it eliminates optical power consumption while ensuring low latency and reliable high-bandwidth performance for cloud and enterprise networking infrastructures.

USE CASES

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

KEY FEATURES

  • Supports ultra-high 400Gbps data transmission
  • Passive direct attach copper (DAC) technology
  • 2.5-meter optimized short-range cable design
  • Zero optical power consumption
  • Cost-efficient alternative to fiber optics
  • QSFP-DD high-density connector design
  • Low-latency and stable signal performance
  • Plug-and-play Cisco-compatible solution

TECHNICAL SPECIFICATIONS

  • Brand: Cisco
  • Model: QDD-400-CU2.5M
  • Data Rate: 400Gbps
  • Cable Type: Twinax Copper (Passive DAC)
  • Length: 2.5 meters
  • Connector Type: QSFP-DD to QSFP-DD
  • Application: Data center, cloud infrastructure, enterprise networking
  • Compatibility: Cisco networking platforms
  • Deployment: Short-reach intra-rack/inter-rack connections
  • Power Consumption: Zero optical power (passive design)
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