Can I Connect a x4 PCIe board into an x16 PCIe Slot? - NI

Max IO Servers 1 x pcie 4 0 x16 slot It's a slot of x16 size but electrically x4 This 1970s slot cars List of Motherboards with 4 PCI-Express x16 Slots: ASUS Pro WS TRX50-SAGE WIFI, GIGABYTE A620M C, GIGABYTE B650M C V2, ASUS Prime B760M-A AX, GIGABYTE B760M

1234 pg slot PA41 Quad Slot NVMe to PCIe X16 Adapter for 4 x NVMe SSD, Not Support PCIe Bifurcation ul> li>span>Quad Slot NVMe to PCIe