which slot to install BM HD extreme?

BM1113 BM GROUP - Screwdriver insulated; slot; SL 3 - bm slot An B key slot is only compatible with B+M key SSDs, and an M key slot is compatible with both B+M key bm slot An B key slot is only compatible with B+M key SSDs, and an M key slot is compatible with both B+M key

bmx slot B450M Pro4 · Dual For SSD Equipped with slot that supports both SATA3 6Gbs and PCIe Gen3 x4 Ultra interface that pushes data transfer speeds up to