For MP build passing Main Board calibration & test line for SoM main board and Optics module calibration & test line for optics modules is enough. After that, SoM main boards and optics modules are packed and sent to end customer.For B/C phases (PVT build) SOM EVK option should be assembled after going through the factory lines. SOM EVK option assembly is described in document “H22 SoM_assembly.docx”. As result, such assembly should be done: