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QDD-400G-XDR4-S

The Arista QDD-400G-XDR4-S is a high-performance 400G QSFP-DD transceiver designed for extended-reach single-mode fiber applications over distances up to 2 kilometers. This reliable optical module provides high-density connectivity, making it an ideal, cost-effective solution for upgrading your existing data center infrastructure with used hardware.

SKU: QDD-400G-XDR4-S Brand: Product ID: 377513
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Description

Arista QDD-400G-XDR4-S Overview

The QDD-400G-XDR4-S is a high-performance 400G QSFP-DD optical transceiver engineered by Arista Networks for demanding data center environments. Designed to support high-density networking, the QDD-400G-XDR4-S facilitates reliable long-reach connectivity over single-mode fiber infrastructure. This component is an ideal choice for secondary market buyers looking to scale their existing Arista switching architecture without compromising on throughput. Its robust design ensures seamless integration into modular chassis systems that require consistent, high-speed data transmission.

Arista QDD-400G-XDR4-S Technical Details

Featuring advanced laser technology, the QDD-400G-XDR4-S operates at 400 Gbps to meet the rigorous bandwidth requirements of modern cloud and enterprise networks. It utilizes a compact QSFP-DD form factor, which optimizes port density and power efficiency across your server hardware ecosystem. Each unit is rigorously tested to ensure it meets original factory specifications, offering a cost-effective solution for upgrading legacy infrastructure. By choosing this transceiver, network administrators gain a reliable, hot-swappable module that maintains signal integrity across extended transmission distances.

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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