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QSFP-40G-LR4-S=

The Cisco QSFP-40G-LR4-S= is a high-performance 40GBASE-LR4 QSFP+ transceiver module designed for extended-reach fiber optic connectivity up to 10 kilometers. This reliable, hot-swappable interface supports high-bandwidth data transmission over single-mode fiber, making it an ideal choice for upgrading your enterprise or data center network infrastructure.

SKU: QSFP-40G-LR4-S= Brand: Product ID: 395011
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Description

Cisco QSFP-40G-LR4-S= Overview

The QSFP-40G-LR4-S= is a high-performance Cisco transceiver module designed to provide reliable 40G connectivity over long-range single-mode fiber optic cables. This hot-swappable input/output device plugs directly into a QSFP+ port, allowing network administrators to expand their infrastructure with ease. By choosing the QSFP-40G-LR4-S= for your secondary market hardware needs, you gain a cost-effective solution that maintains the rigorous quality standards required for enterprise data centers. Its compact form factor ensures optimal port density while supporting high-speed data transmission across extended distances.

Cisco QSFP-40G-LR4-S= Technical Details

Engineered to operate at a wavelength of 1310 nm, the QSFP-40G-LR4-S= utilizes advanced WDM technology to multiplex four data channels into a single fiber strand. This module is fully compliant with IEEE 802.3ba standards, ensuring seamless interoperability with a wide range of Cisco switches and routers. It features a standard LC duplex connector interface, making it physically compatible with most existing single-mode fiber cabling plants. When purchasing this unit, verify that your specific switch firmware supports this particular SKU to guarantee seamless integration into your existing network environment.

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.
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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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