Multiple m2 slots - any difference in speed?

Noob question but hopefully an easy one: my mobo has two m2 slots with one hidden under a heatsink (B below). Just wondering if I'll have any problems transferring it from A to B or if A is faster or something? It's just I don't like the look of the green PCB on the m2, plus I want to use the cool heatsink! Motherboard is ASUS TUF z370-PLUS Gaming
m2.PNG
 

Oussebon

Multiverse Poster
There's no different in speed, but using one of the slots may cause some of the Sata ports to be disabled. The manual will tell you which.
 
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