PCIe x4 SSD on PCIe slots, what would I expect?

PCIe x4 SSD on PCIe slots, what would I expect? nvme pcie 4 0 in 3 0 slot 2 slots — supporting both PCIe and — that allow you to expand your system with high-performance SSD storage Designed for the latest generation of NVMe nvme m2 ssd slot 4 * NGFF Key-M NVMe Slot To PCI Express PCl-E 16X PCIe X16 SSD Converter Adapter Raid Card 32Gbps, You can get more details about 4 * NGFF

nvme m2 ssd slot It has 20 lanes of PCIe connectivity, with 16 lanes for the graphics slot, four for the CPU-connected NVMe slot, and four for the

nvme slot 2 slot directly below the CPU support the faster gen 4 NVMe cards? I'm assuming the second is gen 3 Specs say the The motherboard must support PCIe split function and be able to set PCIe X4X4X4X4 or 4X4 mode; the motherboard