PCIe NVMe SSD on PCIe slot-Worth it?

nvme 4 0 in 3 0 slot   Dan nvme in pcie slot

The card physically has an X4 interface, so it could be plugged into an X4, X8, or X16 slot It can still physically only access 4 lanes (else

SuperSpeed Storage：3*PCIe Connectors; EZ-Latch：PCIe x16 Slot with Quick Release Design; Fast Networks：Wi-Fi 6 & GbE LAN; Extended 2 SSDs : 80x22mm, 60x22mm and 42x22mm, 30x22mm Hardware Requirement: Available PCI-ex1 slot, or PCI-e x4x8x16 Slot on Mainboard

win 168 slot 2 SSDs : 80x22mm, 60x22mm and 42x22mm, 30x22mm Hardware Requirement: Available PCI-ex1 slot, or PCI-e x4x8x16 Slot on Mainboard  One way to determinate the generation of a slot where a device is attached is by its bandwidth