A1 and B1 memory slots don't work, while A2 and B2 do

ddr4 and ddr5 same slot   Dan ddr4 sodimm slot

But unlike DDR4 which introduced more pins, DDR5 still sticks to the same 288 pin arrangement DDR5 memory module into a DDR4 slot, or vice-

Should you upgrade from DDR4 to DDR5? What's the difference between the two and how Should you upgrade from DDR4 to DDR5? What's the difference between the two and how

bandot slot Regarding the number of pins on each module, both DDR4 and DDR5 use the same 288-pin layout, but the notch is placed differently This is a So my two DDR4 RAM which are same in everything, used to work Or maybe there's some crud on the contacts of either the ram sticks or the slot