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Summary This is not a transceiver glossary. It's a switch-port planning guide: how to map access / aggregation / core roles to the right port form factors (SFP+/SFP28/QSFP28/QSFP-DD), then choose DAC/AOC/fiber + connectors (LC vs MPO) without creating rework later. In 2026 enterpr...

IntroductionIn modern data centers and enterprise networks, Quad Small Form-factor Pluggable (QSFP) cables are everywhere. They connect servers, switches, and storage at speeds from 40G to 400G and beyond. Thanks to their four-lane parallel architecture, QSFP cables combine high bandwidth with compact design, helpin...

Introduction: Why talk about AOCs?As data center speeds grow from 10G → 25G → 100G → 400G → 800G, the choices for server-to-switch interconnects become more complex. Today, IT teams typically pick between three options: DAC (Direct Attach Copper) – cheapest, short-distance. AOC (Active Optical Cabl...

Introduction: Why Interconnect Choice Matters?Modern data centers and AI clusters depend on fast, reliable interconnects to keep servers, switches, and storage talking at line rate. As speeds scale from 10G → 25G → 100G → 400G and beyond, the physical medium that links devices becomes just as important as the switch...

Introduction: Why Faster NICs Matter TodayA decade ago, 1 Gigabit Ethernet was considered more than enough for most use cases. But the explosion of AI training, cloud computing, virtualization, high-resolution video, and massive data storage has quickly pushed gigabit links to their limits.Today, 10G, 25G, and 100G ...