Artificial Intelligence (AI) applications are rapidly evolving and producing an explosion of new types of hardware accelerators for Machine Learning (ML), Deep Learning (DL), and High-Performance Computing (HPC). Different implementations target similar requirements for power/cooling, robustness, serviceability, configuration, programming, management and debug, as well as inter-module communication to scale up and input/output bandwidth to scale out. We need an open infrastructure to intercept rapid innovation in artificial intelligence. OAI is where open accelerator infrastructure meets open artificial intelligence. We contributed the OAM design specification during 2019 OCP Global summit, in this workshop we will present our universal OAM baseboard design proposal from multiple hyperscalers and different OAM suppliers.