Can someone clarify PCIe terminology of the B450 TOMAHAWK

b450 tomahawk max m 2 slot   Dan chilli gold slot

MSI ; Storage · 1 x slot ; Storage · Supports PCIe x4 (1st, 2nd and 3rd Gen AMD Ryzen Ryzen with Radeon Vega Graphics and 2nd Gen AMD Ryzen with

MSI B450 TOMAHAWK MAX II ATX Motherboard For AMD Ryzen 2nd3rd Gen, Socket AM4, 4XDDR4 DIMM, 1X , Back IO: 5X HDMI, 1X Type C,DVI, HDMI, PS2, Lan, HD Audio, MSI B450 TOMAHAWK MAX AM4 Socket Dual Channel DDR4 ATX Gaming Motherboard with Turbo and USB Port · MSI B450 TOMAHAWK MAX AM4 Socket Dual Channel DDR4

hagenskov slot Chipset, AMD B450 ; Slot, 1 ; LAN Config 1x Realtek 8111H Gigabit LAN controller ; USB ports , 4 ; SATAIII, 4 Supports 2-Way AMD® CrossFire™ Technology Storage AMD® CPU 2 x SATA 6Gbs ports; 1 x slot Supports PCIe x4 (1st, 2nd and 3rd Gen AMD