What is PCIe (Peripheral Component Interconnect Express)?
Supermicro Joins Z490 Party With PLX Chip, Four PCIe 3.0 Slots | Tom's Hardware
Others|Motherboards|ASUS Global
4 PCI Slot Mid-tower 4th Gen Intel Core Supports Windows 7
ASUS Prime Z790-A WiFi 6E LGA 1700(Intel®14th &13th&12th Gen) ATX motherboard (16+1 DrMOS,PCIe 5.0,DDR5,4x M.2 slots,Intel® 2.5 Gb LAN,USB 3.2 Gen 2 front panel Type-C,Thunderbolt™ 4(USB4),DP,Aura Syn - Walmart.com
B550 motherboard guide: ASUS and AMD bring PCI Express 4.0 to everyone with ROG Strix, TUF Gaming, and Prime - Edge Up