I installed bios with moflu number 4801 on the asus p9x79 motherboard. Did he see xpg s40 m2 ssd? As I said, in order to increase the old system from 4+4=8gb to 64gb, I ordered 8x8gb from Kingston 8 GB 1600 MHz DDR3 CL11 KVR16N11/8. I installed all of them and the bios shows all 8 ram slots, but it does not exceed 48GB. I am waiting for your help from Master Fernando, with my best regards. Note: DIMM A1 AND DIMM A2 give abnormal error