B550M Pro4

can swap it between slot 3 & 4 no problem I've done it myself I have two separate PCiE adapters, one in slot 3 and one in slot 4 The z370

2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found this tech site that explains that a Motherboard can have both PCIe and slots:

candy island princess slot Find out which SSDs can be used to expand your PlayStation®5 console storage space, and how to insert an SSD into the expansion slot

can i use a pcie 40 gpu in a 30 slot However, performance will be limited to the specifications of the lowest of the two versions Related articles What Are PCIe and ? Related Products