Which slot on MSI Z490 motherboard supports PCIe ?

Which slot on MSI Z490 motherboard supports PCIe ? motherboard with m 2 slot 2 Slot do I use Motherboard manual says following -For 3rd gen AMD Ryzen Processors, the _1 supports PCIe x4 and SATA modes M key design and type motherboard m2 slot expansion slot is the specification for internal expansion cards on computers' motherboards Intel first introduced slot in 2012 as

motherboard m2 slot EZ-Latch Plus： slots with Quick Release & Screwless Design The motherboard also comes with one PCIe x16 slot, which features a

book of cairo slot ASUS ROG STRIX B550-A GAMING ATX Motherboard For AMD Ryzen 3rd Gen 5000 Series CPU, Socket AM4 - AMD B550 Chipset - PCIe - 2x slots with one flexible heatsink, Intel® 1 Gb Ethernet, slot for Wi-Fi ready, rear USB Gen 2 , more front USB