100G, 200G & 400G Solutions for AI, HPC & Data Centers

In the era of explosive AI growth, high-bandwidth networking is no longer optional—it's essential. Whether you're scaling GPU clusters for LLM training, upgrading hyperscale data centers, or building low-latency InfiniBand/Ethernet fabrics, reliable 100G+, 200G, and 400G interconnects deliver the performance you need without breaking the budget.

At ShopITgear, we specialize in refurbished and new high-bandwidth optics and cables from trusted brands like Cisco, NVIDIA/Mellanox, and Arista. Save 70-90% vs. new MSRP while getting fully tested gear backed by our lifetime warranty, same-day shipping, and expert support. No big-distributor hassles—just fast, personalized service for IT pros who know what they need.

Why Choose Refurbished High-Bandwidth Interconnects?

• Massive Cost Savings: Enterprise-grade 400G QSFP-DD transceivers and breakout cables at a fraction of OEM prices—perfect for budget-conscious AI builds and data center expansions.
• Proven Reliability: Every item is rigorously tested in real-world environments, with detailed certification reports available.
• Fast Deployment: Stocked for immediate shipping; ideal for time-sensitive AI cluster rollouts or network upgrades.
• Eco-Friendly: Extend the life of premium hardware from decommissioned hyperscalers, reducing e-waste without sacrificing performance.

Our High-Bandwidth Categories

• 100G Interconnects: QSFP28 transceivers (SR4, LR4, BiDi), DAC copper cables (1-5m), and AOCs—great for transitioning from 40G to modern AI-ready networks.
• 200G Interconnects: QSFP56 DACs and AOCs (NVIDIA/Mellanox LinkX compatible)—optimal for mid-scale GPU nodes and high-throughput storage.
• 400G Interconnects: The future of AI networking. QSFP-DD and OSFP transceivers (SR8, DR4), breakout DAC/AOCs (400G to 4x100G or 2x200G), and direct-attach cables—designed for NVIDIA H100/B200 clusters and beyond.

Ideal Use Cases

• AI & Machine Learning Clusters: Low-latency, high-bandwidth links for multi-node training (e.g., NVIDIA DGX/HGX systems).
• Hyperscale Data Centers: Dense, power-efficient optics for spine-leaf architectures.
• High-Performance Computing (HPC): InfiniBand or Ethernet fabrics for research and simulation workloads.
• Hybrid Upgrades: Breakout cables to bridge legacy 100G gear with new 400G infrastructure.

Popular searches we help with: refurbished 400G QSFP-DD, affordable NVIDIA Mellanox 400G breakout, 100G DAC for AI, high-speed optics with warranty.

Need a custom bundle, compatibility check, or quote for volume? Contact us today—we're here to help you build faster, smarter networks. Browse below or reach out for hard-to-find parts.