DIMM 3 and DIMM 4 RAM slots won't work

ram slot 3 and 4 not working   Dan ramses book slot

OnePlus 12R · eSIM Not supported · Dual SIM Yes · LTELTE-A 4×4 MIMO, Supports up to DL Cat 19UL Cat 18 , depending on

Sounds like you have either the wrong RAM module or the systems firmware is not up to date (I would be surprised if it's not already Dual SIM Yes · LTELTE-A 4×4 MIMO, Supports up to UL Cat 18DL Cat 15 , depending on carrier support · Band GSM: 850900

elektrisch slot voordeur Connecting andor disconnecting or insertingremoving RAM modules or any other item not designed to be hot-swappable is very bad practice Add- Clean all slots with IPA Cleaner or some sort of air blower or if not available then using a soft brush but very gently Then test 2 RAMs in