ram does not fit with mother

SO YES I DO HAVE A B350F ROG STRIX MOTHERBOARD IN MY PC BUILD, AND MY RAM IS CORSAIR'S RGB VENGENANCE PRO RAM THAT IS AT 3000MHZ AND TESTED AT 1.35V. SO I FINISH THE BUILD, AND WHEN I GO IN BIOS(D.C.O.P) AND SET IT AT 3000 MHZ AND 1.35V I FIND THERE IS NO OPTION FOR 3000 MHZ. I NEED HELP WHAT DO...