microQSFP (left) and QSFP28 plug modules

QSFP28 (foreground)  and microQSFP plug modules 

microQSFP (foreground) and QSFP28 plug modules

QSFP28 (foreground) and microQSFP plug modules


  • 33% increase in density over QSFP (based on 48 microQSFP ports vs. 36 QSFP ports in 365mm)
  • Same 4 channel electrical interface as QSFP
  • Same 3.5+W power capability as QSFP+
  • Will support 25G and 50G (PAM4) electrical data rates


  • Functionality of QSFP in SFP density
  • Significantly improved thermal management
  • Accommodates multiple electrical interface generations (4 channels, to 2 channels, to 1 channel), while supporting a long life optical interface WITHOUT changing form factor
  • Enables up to 72 ports per 1RU line card


  • Enables a second generation line card with higher port density than a QSFP based line card
  • Enables the same IO density as SFP with improved thermal management and increased bandwidth density

    Promoter Members:

  • Contributor Members:

Register Now

Thank you for connecting with the microQSFP MSA’s web site.

The MSA has drafted a mechanical specification and is working on the complete microQSFP specification that enables higher pluggable port density and improved port thermal management. The MSA is now accepting additional members to assist on this development effort. Please either contact one of the existing members for more information on the process of joining the MSA or register on this webpage and we will contact you. Sponsorship by two current members will be required.

Thank you for your interest.

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