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QDD-400G-FR4-S

The Cisco QDD-400G-FR4-S is a high-performance 400G QSFP-DD transceiver designed for short-reach data center and enterprise networking, offering reliable 4-lane 100G PAM4 optical connectivity over single-mode fiber up to 2km.

SKU: QDD-400G-FR4-S Brand: Product ID: 127054
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Description

The Cisco QDD-400G-FR4-S is a high-performance 400G QSFP-DD transceiver designed for data center and enterprise networking environments. Built for single-mode fiber (SMF) connectivity, it supports four 100G PAM4 channels over a duplex LC connector, reaching distances of up to 2 kilometers. Its compact QSFP-DD form factor ensures compatibility with high-density network architectures, optimizing bandwidth efficiency while minimizing power consumption. Designed for seamless integration with Cisco networking equipment, this module delivers reliable, high-speed connectivity for demanding applications.

Equipped with a built-in digital diagnostics monitoring (DDM) feature, the transceiver provides real-time performance data, enabling proactive network management. It operates on a 1310nm wavelength and complies with the 400G-FR4 MSA standard, ensuring interoperability with other industry-compliant hardware. The hot-swappable design allows for easy installation and replacement without disrupting network operations. Ideal for upgrading network infrastructure, this transceiver delivers a cost-effective solution for scaling high-speed connectivity.

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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