B550-A Pro M2_1 Slot not working?

Before you buy an SSD, you should check which type of slot your computer is using An B key slot is only compatible with B+M key

2, whereas slots with M-key specification can either be exclusively PCIe or might support SATA if it's dual-mode Similar to the slots, SATA SSDs are

what does a m2 slot look like An SSD is “keyed” to prevent insertion of a card connector to an incompatible socket on the host The specification

what is a slot fish With the slots in the riser part, I figured the heat would go out the back Slot 1 was my intended target as it looks like the easier one to