O:Please follow the steps below to enable C.A.M. (Clever Access Memory) on H510 Pro BTC+.

Step 1.
Download BIOS 1.40 or later version from ASRock website and update the BIOS via Instant Flash.
https://www.asrock.com/MB/Intel/H510%20Pro%20BTC+/index.asp#BIOS

Step 2.
The C.A.M. (Clever Access Memory) option is supported when integrated graphics are disabled.
By default integrated graphics will be disabled when a PCIe graphics card is detected.
Please make sure the monitor is connected to the graphic card.

Step 3.
Please go to BIOS\Advanced\Chipset Configuration and enable "C.A.M. (Clever Access Memory)”.


Step 4.
Press F10 to save the setting and restart.