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CAB-D-2Q-400G-2.5

The Arista CAB-D-2Q-400G-2.5 is a 2.5-meter QSFP-DD to 2x QSFP56 passive direct attach copper (DAC) breakout cable designed for high-speed 400G to 2x 200G network connectivity. This reliable, low-latency cabling solution is ideal for high-density data center environments requiring efficient server-to-switch interconnects.

SKU: CAB-D-2Q-400G-2.5 Brand: Product ID: 377589
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Description

Arista CAB-D-2Q-400G-2.5 Overview

The CAB-D-2Q-400G-2.5 is a high-performance direct attach copper breakout cable designed to bridge high-density 400G ports to dual 200G interfaces. Engineered for data center efficiency, the CAB-D-2Q-400G-2.5 provides a reliable, low-latency physical connection for demanding networking environments. This passive copper assembly is an ideal solution for short-reach interconnects where signal integrity and thermal management are critical for server-to-switch communication. By choosing this pre-owned hardware, you ensure robust connectivity while maintaining the rigorous standards expected from Arista networking infrastructure.

Arista CAB-D-2Q-400G-2.5 Technical Details

Featuring a 2.5-meter length, the CAB-D-2Q-400G-2.5 utilizes high-quality shielding to minimize electromagnetic interference during high-speed data transmission. The cable assembly is built with precision-molded connectors that ensure a secure fit within standard QSFP-DD and QSFP56 port configurations. It supports multi-lane signaling, providing the necessary bandwidth for modern cloud-scale architectures and high-performance computing clusters. This durable component is thoroughly tested to ensure it meets the original manufacturer’s specifications for signal loss and mechanical longevity in secondary market applications.

Who We Are
 
ROC Telecom is a family-owned, Texas-based company specializing in helping businesses unlock value from their networking and telecom equipment. From routers and switches to optical gear and more, we provide a seamless solution for businesses looking to sell, recover assets responsibly, or buy quality-tested equipment at competitive prices.
 
What We Do
 
We make it easy to:
  • Sell Used Equipment: Get a quick, hassle-free quote and maximize the value of your old IT gear.
  • Buy Certified Networking Equipment: Access affordable, quality-tested equipment from top brands like Cisco, Juniper, Ciena, Fujitsu, Infinera and more.
Why Choose ROC Telecom?
  • Expertise You Can Trust: 15 years of experience in asset recovery and resale.
  • Sustainable IT Solutions: Reduce waste and support environmentally responsible practices.
  • Competitive Pricing: Fair, fast, and accurate valuations for all your equipment.
  • Free Shipping Logistics: Fast, secure, and hassle-free shipping or pickup options for buyers and sellers.
Our Process
  1. Submit a Request: You can use the “Buy” or “Sell” buttons above to get started — or fill out a form, call us at 585-406-1248, or email bailey@roctelecom.com. Whatever’s easiest for you, we’ll make it quick and hassle-free.
  2. Quick Evaluation: We’ll assess your equipment—whether you’re looking to sell it or find the right gear for your needs—and provide a fair offer.
  3. Simple Logistics: Fast, secure, and straightforward shipping or pickup solutions.
  4. Value Delivered: Recover funds from unused equipment or save on quality-tested networking and telecom gear.
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