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QDD-400G-ZR-S

The Cisco QDD-400G-ZR-S is a high-performance 400G QSFP-DD transceiver designed for long-reach data center and metro networks, offering robust reliability and efficiency—ideal for buyers seeking cost-effective used networking solutions.

SKU: QDD-400G-ZR-S Brand: Product ID: 127055
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Description

The Cisco QDD-400G-ZR-S is a high-performance 400G QSFP-DD transceiver designed for long-haul and data center interconnect applications. Built for demanding network environments, this module supports coherent DWDM transmission over distances of up to 120 km. It operates on the OIF 400ZR standard, ensuring compatibility with a wide range of networking equipment. The QSFP-DD form factor allows for high-density deployments, optimizing space and power efficiency in large-scale infrastructures.

This transceiver features advanced digital signal processing (DSP) and forward error correction (FEC) to maintain signal integrity across extended distances. Supporting dual C-band tunable wavelengths, it enables flexible deployment in DWDM networks. The module is hot-swappable and compliant with industry standards, simplifying integration into existing systems. Designed for reliability, it provides a cost-effective solution for upgrading network capacity with used hardware.

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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