Question: How to enable C.A.M in the BIOS? Also known as Resizable BAR.(4/1/2021) Answer: Step 1: On the ASRock website please find the BIOS download page for you motherboard.
Check the descriptions to see if C.A.M. is supported already.
Intel 500-series models support C.A.M. since the first version.
Step 2: While the system is starting press "DEL” to boot into BIOS setup and go to BIOS\Boot\CSM.
If you cannot find the CSM menu then please set "Fast Boot” to "Disabled”.
Step 3: In BIOS\Boot\CSM please set "CSM” to "Disabled”.
Step 4: Go to BIOS\Advanced\Chipset Configuration and set "Above 4G Decoding” to "Enabled”.
Step 5: After step 4, the option "C.A.M” will appear below the option "Above 4G Decoding”.
Please set it to "Enabled”.
Step 6: Press "F10” to save the settings and restart the system.