Kingston A2000
500 GB, M.2 2280
Kingston A2000
500 GB, M.2 2280
Yes, this M.2 SSD is compatible with the B550 A Pro. P.S. You have two M.2 interfaces on this mainboard.
If this mainboard has one or more m.2 slots yes, which I strongly suspect.
I have 2 A2000 (1000GB) installed on an MSI B550 A PRO (AM4, AMD B550, ATX) motherboard... Works really great!