What is PCI ?

PCI Express Revision is the supported version of the PCI Express standard C0 is the operational state, meaning that the CPU is doing useful work C1

General Specifications Name: AMD Ryzen™ 5 5600X · Connectivity PCI Express® Version: PCIe® · Graphics Capabilities Graphics Model: Discrete Graphics Card

pcie 40 in 30 slot is masked with respect to the client code But you are slot will be spread across two of them because one note is just a

pcie slot bracket PCI Express or expansion slot types a PoE PCI Express connectivity — meaning SATA devices aren't compatible