HBA pcie x8 card on pcie x4

HBA pcie x8 card on pcie x4 pcie 3 slot I've filled up my motherboards 8 sata slots and now I'm looking for an HBA to get 8 more Alas, I've only got a pcie x8 physical with x4 pcie slot height PCIe slots allow your motherboard to connect with your PC's most critical components and provide key functionality

pcie slot height An x4 PCIe device has a theoretical max transfer rate of MBsec according to wiki

pcie slot splitter AMD A620 ATX motherboard with DDR5, PCIe support, dual slots, Q-Latch, 12+2 DrMOS, Wi-Fi 6, Realtek Ethernet, DisplayPort, HDMI™, PCIe slots come in different physical configurations: x1, x4, x8, x16, x32 The number after the x tells you how many lanes (how data travels to