https://asrock.com/mb/AMD/B450 Steel Legend/index.asp#Specification
1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)
M2_2, SATA3_3 and SATA3_4 share lanes. If either one of them is in use, the others will be disabled.
咁睇法似用到
但睇你SATA用左咩位