Can I install PCIe x8 expansion card in a PCIe x4 slot on a QNAP NAS

website pcie 8x slot ODD form factor · PCIe x16 Slot Supports 8-lane PCI Express Bandwidth · Two SFF-8643 Connectors · Power Input & Output pcie slot bracket PCIe Slot Number, CPUPCIe Port, PCIe version, PCIe Slot Size, PCIe Lanes ; 2, DMI2, , x8, x4 ; 3, DMI2, , x4, x2

pcie 8x slot When placing a Gen3 x8 configured PCIe board into a Gen4Gen5 compatible x8 slot, Link Width recognition issue occurs Hovering over the PCIe  PCIe Slot Number, CPUPCIe Port, PCIe version, PCIe Slot Size, PCIe Lanes ; 2, DMI2, , x8, x4 ; 3, DMI2, , x4, x2   as you have a Non G Processor that top slot should be running at full x16 speed the Top is coming Directly off the Last 4 PCI-E lanes

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