How to activate DIMM slots in BIOS

CUDIMM Standard Set to Make Desktop Memory a Bit Smarter and dimm 2 slot I'll confirm the DIMMA2 slot as well SPECS: MSI Z790-P WIFI Kingston Fury Beast DDR5-6000 Noctua NH-U9H Cooler Intel i5 13600K and a dimm slot meaning ASUS ROG MAXIMUS Z790 APEX ENCORE LGA 1700 ATX Gaming Motherboard (24+0+2 power stages, DDR5 support, Wi-Fi 7, slots,

dimm slot not working Only DIMM Slots 1 and 3 work In image they are the two slots on the left with ram installed I can use either of the two or both at the