This guide provides a systematic selection process to help you choose the right QSFP28 module every time. The correct choice depends on matching fiber type, reach distance, switch compatibility, power budget, breakout requirements, and overall architecture. Below, you will find comprehensive module comparisons, realistic market pricing, and precise vendor compatibility protocols to ensure a. This article tells you how to choose 100G QSFP28 modules for medium and long transmission distances, as well as the advantages of QSFP28 modules and why you should choose it. Choosing QSFP28 optical transceivers that fit your system helps. QSFP28, or Quad Small Form-factor Pluggable 28, is the industry-standard form factor for 100 Gigabit Ethernet. It uses four electrical lanes to deliver a total throughput of 103. 1 Gbps, with each lane operating at 25. This 4×25G design is what separates QSFP28 from its 40G predecessor. A QSFP28 module contains a small EEPROM chip that stores its identity: vendor name, part number, serial number, revision, power class, supported capabilities, and diagnostic information.
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