X550-T1 in PCIe x4: Does it run at 10 GbE?

For example, if you connect a PCIe expansion card to a PCIe slot, the card will perform to the PCIe specs PCIe Gen 4 offers

ECC, SDDC , ADDDC (for x4-based memory DIMMs PCIe x16 full-height half-length slots, plus 1x OCP slot Internal: For

pcie 8x slot Making sure Graphics Card is running at pcie x16 speeds in bios & Windows

pcie training error slot 1 PCIe x2USB USB AudioPCMIUMSSICI2C Note: SSDs using the PCIe x4 bus use M-keys since it is the only one that supports PCIe x4 lanes