Asrock have a new Bios for the Asrock B450m pro4, it's Bios version 5.10 which updates AGESA to AMD AGESA ComboAM4v2 1.2.0.2 which is supposed to fix USB issues.
Has anyone tried this Bios version as it still gives the warning below and as I am using a Raven ridge CPU I am not sure if to try it but I am desperate to get rid of the USB issues when using front panel USB 3.0
*Caution!!! Please do NOT update this BIOS if 3300X CPU is being used on your system.
*ASRock do NOT recommend updating this BIOS if you are going to use Pinnacle, Raven or Summit Ridge CPU on your system.
*Before updating this BIOS, please also read the description in previous BIOS version.
Has anyone tried this Bios version as it still gives the warning below and as I am using a Raven ridge CPU I am not sure if to try it but I am desperate to get rid of the USB issues when using front panel USB 3.0
*Caution!!! Please do NOT update this BIOS if 3300X CPU is being used on your system.
*ASRock do NOT recommend updating this BIOS if you are going to use Pinnacle, Raven or Summit Ridge CPU on your system.
*Before updating this BIOS, please also read the description in previous BIOS version.