When placing a Gen3 x8 configured PCIe board into a Gen4Gen5

Eight NVMe SSD slots on a PCIe x16 card Silent operation Add your own ultra-fast SSDs for Mac, Windows, and Linux

A x1 electrical card in any compliant PCIe slot will always run in x1 electrical mode The link width provides a measure of the data transfer

pcie 50 x16 slot PCIe Slot Width and Capabilities · Slots 3 and 10 have x16 connectors with x16 electrical interface · Slots 1 and 2 have x16 connectors with x8 electrical

pcie slot length PCIe slots come in a variety of physically different sizes A PCIe card will fit into a slot of its size or bigger, but not into a smaller PCIe slot