RackStar Networks Product Portfolio

RackStar Networks connects you to the switching, routing, wireless, security, and data center hardware that keeps your business moving. We blend used, refurbished, and new platforms so you can stretch budgets, reduce risk, and hit timelines without sacrificing reliability.

End-to-end networking hardware: campus, branch, WAN, and data center
Mix of used, new in box, refurbished, and end-of-life networking equipment
Multi-vendor coverage including Cisco, Arista, Juniper, and other leading brands
Tested, warrantied gear backed by engineers who understand real-world deployments

Not sure where to start? Share your environment, timelines, and constraints and let RackStar design the right blend of products for your project.

Talk to a Product Specialist Used Network Equipment Inventory

Used Networking Equipment

RackStar buys and sells used networking equipment and turns it into real value for your business. Whether it's new in box hardware, refurbished gear, or end-of-life equipment, we'll evaluate your assets and make a competitive offer.

You can take the payout as cash you can put straight in the bank, or apply the proceeds as credit toward a current or future RackStar purchase ' whichever best fits your refresh plans and budget.

We purchase new, unopened, refurbished, and end-of-life networking gear
Cash payouts or trade-in credit that can be applied to new RackStar projects
Secure data handling and compliant disposition when required
Access to tested, warrantied used hardware for cost-effective upgrades

Ideal for consolidations, platform upgrades, and clearing out storerooms without wasting value.

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New Networking Equipment

When you need the latest platforms, higher performance, or vendor-specific features, RackStar sources new networking equipment through trusted manufacturer and distribution partners.

We help match the right hardware to your use cases, from routing and switching to wireless, security, and data center infrastructure, while keeping lead times and budgets under control.

Access to brands such as Arista, Supermicro, Barracuda, Ruckus Wireless, and more
Configuration assistance so you order the right part numbers the first time
Options for sparing, staging, burn-in, and integration services
Support for refreshes, expansions, and greenfield deployments

Use new gear where it matters most, and pair it with used equipment to maximize ROI.

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Rocking Your Network

Now stocking: Used Cisco, Juniper, Arista :::: Same-day quotes on many part numbers. :::: Request a quote ::::

RackStar Services

RackStar delivers practical, engineering-led services that help you design, roll out, and support the networks your users depend on. We focus on predictable outcomes, clean documentation, and long-term supportability not one-off projects that leave your team holding the bag.

Wireless networking design, RF spectrum analysis, and on-site surveys
Structured cabling projects covering copper, fiber, and pathway design
Implementation, cut-over support, and troubleshooting when things get noisy
Flexible engagement models: project-based, time & materials, or ongoing services

Every engagement starts with understanding your existing environment, constraints, and desired outcomes then we design a service plan to match.

Discuss a Services Project

Wireless Networking Services

RackStar designs and delivers wireless networks that actually work in the real world, in crowded offices, warehouses, campuses, and outdoor spaces where interference and roaming can make or break the user experience.

Indoor and outdoor wireless networking design for campus, branch, and industrial sites
RF spectrum analysis and predictive / on-site Wi-Fi site surveys
Access point placement, channel plans, and capacity planning for dense environments
Cut-over support, tuning, and post-deployment validation

We align wireless design to applications, devices, and security requirements, not just signal strength heatmaps.

Schedule a Wireless Assessment Learn More About Wireless Services

Structured Cabling Services

A reliable network starts with clean, standards-based cabling. RackStar designs and installs structured cabling systems that make adds, moves, and troubleshooting faster and less painful.

Design and installation of copper and fiber structured cabling systems
Labeling, documentation, and certification to industry standards
Rack and cabinet builds, patch panel management, and pathway design
Support for new builds, expansions, and data center or MDF/IDF refreshes

Our goal is simple: a cabling plant that's neat, documented, and built to support the next round of upgrades, not just this project.

Request a Cabling Quote View Cabling Services

RackStar Enterprise & Data Center Solutions

RackStar designs solutions that tie your products and services together into working, supportable architectures for enterprise campuses, remote sites, and modern data centers.

End-to-end network architectures spanning campus, WAN, data center, and cloud
Designs that balance performance, resiliency, and budget realities
Vendor-agnostic recommendations that make the most of your existing investments
Deployment roadmaps that reduce risk and downtime during transitions

We start with your business requirements and operational constraints, then select the right platforms, optics, and services to support them.

Enterprise Solutions

RackStar's enterprise solutions are built for real-world users, devices, and applications, not just reference diagrams. We help you modernize campus and branch networks, secure remote access, and connect to cloud services without breaking performance or the budget.

Resilient campus and branch designs with clear upgrade and growth paths
Zero Trust-ready access layers with identity-aware policies
Secure remote access for hybrid workers and third parties
Optimized connectivity into public cloud and SaaS platforms

Whether you're standardizing on a single vendor or running a multi-vendor environment, RackStar can help align platform choices with your operational model.

Plan an Enterprise Refresh Explore Enterprise Solutions

Data Center Solutions

RackStar data center solutions focus on predictable performance, scale, and operational visibility. From leaf-spine fabrics and out-of-band networks to high-density optics, we design architectures that are easier to operate, not just faster on paper.

Leaf-spine data center fabrics and high-availability switching architectures
Out-of-band management networks that keep you in control during incidents
High-density optics, DWDM, and interconnect strategies for colos and multi-site designs
Migration planning from legacy topologies to modern, scalable designs

We can help Whether you're building a new data center, consolidating footprints, or integrating with cloud and colocation providers.

Discuss a Data Center Project View Data Center Solutions

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Home / Used Networking Equipment Inventory / Used Cisco Networking Equipment / QSFP28 Modules

Used Cisco Systems Inventory

Cisco Systems

Used Cisco Systems QSFP28 Modules

RackStar Networks sources used Cisco Systems qsfp28 modules for expansion, installed-base support, sparing strategy, and refresh projects.

Browse the products below and request pricing for exact part numbers. We can also help identify compatible hardware, related accessories, and matching components for Cisco Systems environments.

ManufacturerCisco Systems

CategoryOptics

Products Listed1

Cisco Systems

ONS-QSFP28-LR4

ONS-QSFP28-LR4 optical transceiver

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Need help sourcing Cisco Systems qsfp28 modules?

Send us your part numbers, quantities, and project needs. We can help locate matching used Cisco Systems hardware and provide pricing.

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