The company was founded by Jeff Holden, Amazon's tenth engineer who built Prime and later served as Uber's first chief product officer. Its Matter Compiler is an all-digital manufacturing system that builds working micro-machines from software specifications, with no extra engineering charge for a production lot of one. The $250 million total comes from OneIM, Gigafund, XTX Ventures, Valor Equity Partners, Construct Capital, Sozo Ventures, the University of California Regents and others. The first product family, PrimeSwitch, uses materials and moving parts that standard semiconductor fabs cannot handle, according to the company. It will be shown publicly at the Open Compute Project Global Summit in San Jose, which runs October 12 to 15. Initial targets are cooling and power switching hardware for AI data centers. Power delivery and cooling, not only GPUs, now limit how fast AI capacity comes online. Hardware startups attacking those bottlenecks are drawing large rounds, and buyers will see them pitching at OCP this week.