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Build a supportive, informative and inclusive community, with the goal of forming a healthy Ecosystem in Mezzanine NIC space, under OCP framework.

Supportive - Support implementation questions - Evaluate new use cases

Informative - Share the latest topics and trends related to OCP Mezz NIC spec - Share both challenges and opportunities

Inclusive - Take community feedback and make iterations to proposal before submitting major revision to work group and IC Open to both adopters, and observers

Get Involved



OCP Engineering Workshop Sessions

More information about OCP events can be found at:


This project meets - TBD

This call is open to the public.

The agenda as well as information on how to join the call can be found at: TBD

Working documents are posted to the WIKI at: TBD

Meeting minutes are available at: TBD


Project communication is done through the opencompute-mezz-card mailing list.

To get on the mailing list or manage your subscription go to:

To access the mailing list archives go to:

Specifications and Designs

All these accepted by the IC

Specification Version Submit Date Contributor License Notes
OCP Mezzanine card v2.0

OCP_Mezz_2.0_rev1.00_20151215b_pub_release.pdf(2.2MB) (88MB)

Mechanical 20151023_P1-P9_K1-K5 zip file (57MB)

V2.0-1.0 Dec 15, 2015 Facebook OWFa 1.0 Added support for x16 (quad x4), NCSI, dual QSFP+, & Quad SDP+

Accepted by OCP IC 2/24/2016

OCP Mezzanine card v0.5, original standard

Mezzanine Card (rev 0.5)

V0.5 Oct 8, 2012 Facebook OWFa 1.0 Defacto standard for the original network mezzanine with a x8 PCIe Gen3 interface