In FMC-to-PCIe Adapter, for the endpoint configuration, the reference clock must be sourced from the host system and the FMC-to-PCIe Adapter does not provide a 100 MHz PCIe reference clock.
Please refer section “Clock Oscillator” from the PCIe FMC Module datasheet for better understanding.
For further inquiries, please get in touch with mktg@iwave-global.com
Please find the detailed G30M product information in the below link,