How Can I Check If a Memory Slot Is Faulty? & Upgrade

Ram slots B1 and B2 work fine; unfortunately this mobo prefers a ram slot pairing of A2+B4 Extreme memory profile enebled or disabled?

Ram slots B1 and B2 work fine; unfortunately this mobo prefers a ram slot pairing of A2+B4 Extreme memory profile enebled or disabled?

member 4x4 slot SDXC card slot HDMI port mm headphone jack MagSafe 3 port M3 Two Memory 18GB 18GB unified memory Configurable to: 36GB (M3 Pro or M3 Max with

member slot 888 mem- ber , guide members having pivotal connections with said supporting slot along a narrow side thereof , and means for positively adjusting such