400G Makes Headlines — But 10G, 40G, and 100G Still Rule the Ground Game

TFO Blog 400G Makes Headlines — But 10G, 40G, and 100G Still Rule the Ground Game

Summary:
While the optical industry is focused on the evolution of 400G, 800G, and 1.6T technologies, the reality on the ground tells a different story: most active deployments in 2025 still rely heavily on 10G, 40G, and 100G transceivers.

According to Mordor Intelligence, transceivers in the 10–40 Gbps range account for more than 42% of all global unit shipments, driven by sustained demand in enterprise, campus, and edge networks. These speeds continue to dominate real-world builds—not only due to legacy equipment—but because they still match the throughput needs of the majority of switching infrastructure.
Source: https://www.mordorintelligence.com/industry-reports/optical-transceiver-market

 


 

Company Homepages

  • Mordor Intelligence: https://www.mordorintelligence.com

  • LightCounting: https://www.lightcounting.com

  • Lightwave: https://www.lightwaveonline.com

  • TenFourOptics: https://www.tenfouroptics.com

 


 

Transceiver Tip of the Day

QSFP-40G-SR4 modules use MTP/MPO connectors — not LC.
To connect to 10G ports, use an MTP to 4× LC breakout cable with Type B polarity and verify proper lane alignment. Most 40G deployment failures stem from cable mismatches, not the module itself.

 


 

Action Points

  • Focus your replenishment on 10G–100G modules—these are still the transceivers causing real deployment delays.

  • Use ROY to instantly match legacy part numbers or EOL OEM SKUs.

  • TFO modules are tested in real switches, include BER/eye data, and ship with lifetime coverage.

 


 

What It Means for You

  • IT leads: Don’t delay rollouts waiting on 400G. TFO can keep your current projects moving now.

  • Procurement: 10G and 40G are still the most reordered SKUs. Secure them ahead of Q4 lead-time risk.

  • Install teams: Reduce site risk. TFO modules are plug-and-go—validated, fast, and backed for life.

 


 

Shopper Watchlist – In-Stock by Speed

 


 



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