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QSFP-40GE-ER4

The Juniper QSFP-40GE-ER4 is a high-performance, hot-swappable 40 Gigabit Ethernet transceiver designed for long-range data center and enterprise networking, supporting distances up to 40km over single-mode fiber—ideal for extending network reach with reliable used hardware.

SKU: QSFP-40GE-ER4 Brand: Product ID: 322337

Description

The Juniper QSFP-40GE-ER4 is a high-performance optical transceiver designed for long-haul 40 Gigabit Ethernet connectivity over single-mode fiber. Housed in a compact QSFP+ form factor, it supports distances up to 40 kilometers using duplex LC connectors, making it ideal for data center interconnects and large-scale enterprise networking. This module operates over four wavelengths in the 1310 nm range using coarse wavelength division multiplexing (CWDM) technology, optimizing fiber utilization and minimizing infrastructure costs. Its robust design ensures compatibility with Juniper networking equipment, while also supporting MSA-compliant systems for broader interoperability.

Engineered with integrated digital diagnostics monitoring (DDM), the QSFP-40GE-ER4 provides real-time data on temperature, optical power, and voltage levels to aid in proactive network management. It supports a data rate of 41.25 Gbps and complies with the IEEE 802.3ba 40GBASE-ER4 standard, ensuring reliable and consistent performance across long distances. The transceiver features built-in forward error correction (FEC) to maintain signal integrity, especially in high-interference environments. Ideal for those seeking cost-effective, used networking solutions, this module offers enterprise-grade functionality and durability at a fraction of the price of new 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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