US authorities are investigating Bangkok-based OBON Corp for its alleged role in a scheme to smuggle $2.5 billion worth of Super Micro Computer servers equipped with advanced Nvidia chips to China. According to court filings, OBON allegedly collaborated with a network of brokers to divert these AI semiconductors, violating US trade restrictions. The investigation has drawn attention to the involvement of Alibaba Group, which has been identified as a potential end customer but denies any business relationship with Super Micro or OBON. This case is part of a broader crackdown on AI chip smuggling since the introduction of export restrictions on Nvidia chips to China in 2022. OBON, which played a significant role in establishing Thailand's Siam AI initiative, has been linked to efforts to advance the country's AI ecosystem. The allegations have already impacted Super Micro's stock, indicating the serious implications of the investigation.