PCIe Expansion card and Bifurcation

What does the X4 mean in an PCIe Gen X4 NVME drive? 2x m 2 ssd slot nvme pcie gen4 That being a 4-lane PCIe 2280 adapterriser that houses two 2-lane 2230 slots (last I checked, such a thing sadly did not yet 2xl slot Buy Sabrent 1TB Rocket NVMe Gen4 PCIe Internal SSD Extreme Performance Solid State Drive online at low price in India on

2x m2 ssd slot nvme pcie gen4 The upper tier ones support three PCIe NVMe drives, though the third NVMe slot may share lanes with SATA ports or PCIe slots, depends on the