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N520-4G4Z-A

The Cisco N520-4G4Z-A is a compact, high-performance network platform designed for enterprise and service provider edge deployments, featuring four 1/10GE SFP+ ports and four 1GE RJ-45 ports, ideal for scalable, secure, and efficient routing in a used hardware environment.

SKU: N520-4G4Z-A Brand: Product ID: 126610
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Description

The N520-4G4Z-A is a high-performance network interface card designed for data-intensive environments that demand low latency and high throughput. This compact yet powerful adapter features four 100GbE QSFP28 ports and four 25GbE SFP28 ports, providing flexibility for a variety of networking applications. Built with a PCIe Gen4 interface, it ensures optimal bandwidth utilization, making it ideal for cloud computing, high-frequency trading, and data center deployments. Its robust design includes advanced offloading capabilities, reducing CPU overhead and improving overall system efficiency.

Equipped with high-speed packet processing and hardware acceleration, the N520-4G4Z-A supports RDMA, DPDK, and VXLAN/Geneve tunneling for enhanced network virtualization. The card is built with enterprise-grade components, ensuring durability and reliability in demanding environments. It features low-profile and full-height bracket options for compatibility with different server configurations. With support for precision time synchronization (PTP) and congestion control mechanisms, this adapter delivers consistent performance for latency-sensitive applications.

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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