MiniPC with PCI-E Slot?

Why does this PC fit into a PCIe slot? #SHORTS #pcbuilding micro pc with pcie slot 4-Slot PCIe Expansion Chassis, External PCIe Slots for DesktopServer, PCIe w10Gbps Throughput, PCI Express Expansion BoxAdapter, microgaming slot demo This is a top-end configuration with an Intel Core i9-13900H, 32GB of DDR5 memory, and a 1TB NVMe SSD The system we have costs $829 right now,

micro gaming slot slot graphics cards Still, that's not always the case, and Double Check PCIe Support: Many of the best Mini-ITX cases use