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QSFP-40GE-LR4

The Cisco QSFP-40GE-LR4 is a high-performance, long-range 40 Gigabit Ethernet transceiver designed for data center and enterprise core networks, offering reliable connectivity up to 10 km over single-mode fiber—an ideal cost-effective solution when purchasing used network hardware.

SKU: QSFP-40GE-LR4 Brand: Product ID: 127095

Description

The Cisco QSFP-40GE-LR4 is a high-performance, long-range transceiver module designed for 40 Gigabit Ethernet applications. Built for data centers and enterprise networks, this QSFP+ module supports a transmission distance of up to 10 kilometers over single-mode fiber (SMF) using LC duplex connectors. It operates on four separate wavelengths in the 1310nm range, multiplexing them into a single fiber pair for efficient and reliable data transmission. With a power-efficient design and compliance with IEEE 802.3ba and QSFP MSA standards, it ensures seamless integration into existing Cisco networking environments.

This transceiver supports a data rate of 41.2 Gbps and is hot-swappable, allowing for easy upgrades and maintenance without network downtime. It features Digital Optical Monitoring (DOM) for real-time diagnostics, helping to monitor power levels, temperature, and signal integrity. The module is compatible with a wide range of Cisco switches and routers, making it a flexible solution for high-speed networking needs. Purchasing used or refurbished hardware provides a cost-effective way to expand network capacity while maintaining Cisco’s trusted performance and reliability.

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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