Sinisterweed

I have a m slotted m.2 installed in my pc.  I'm buying a larger m.2 to replace it however the new one is slotted M+B.  I'm pretty sure the new one will work on my MB but I can't find a USB adapter that will work for both.  Anyone know of a USB to M.2 that will work with M slotted and a M+B slotted m.2 drive?

I just order a ASRock AB350M Pro4 AM4 AMD Promontory B350 SATA 6Gb/s USB 3.1 HDMI Micro ATX AMD Motherboard.  It has 2 m.2 slots available.  One rated for 32gb/s and one 6 gb/s.  I am pretty confused about what the difference is between the different storage options for the m.2 slots.  I'm hoping someone can explain which kind of storage I should buy to maximize the potential of the 1 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32Gb/s) (with Ryzen Series CPU) or Gen3 x2 (16Gb/s) (with A-Series APU)**

Thanks