Three years after its founding, the Consortium for On-Board Optics (COBO) used OFC 2018 in San Diego last month as a stage on which to debut its long-awaited Release 1.0 specifications. The specifications cover three classes of onboard optical modules, backed by a pair of electrical interfaces. The optical modules will support transmission rates up to 800 Gbps. COBO expects the modules to meet a range of data center network requirements, including those that would require coherent transmission.