slot sb

Put the 980 Pro into the M2A_CPU slot, and the 980 non-pro in thr M2B_SB slot. rtp slot pangkalantoto It looks like your specific motherboard "supports" PCIe 4 0 in both M 2 slots, but it does so by bifurcating the PCIe 4 0 x4 lane for the SSD into 2 PCIe 4 0 x2 lanes That means less bandwidth, and therefore lower speeds on both if both are set to PCIe 4 0 mode