Z690 PCIe slot question

Types of PCIe Slots PCle Lanes short pcie slot If one GPU needs to receive data, it gets the full bandwidth for a very short time while the other does not transfer data, but it won't help short slot GEN PCIE PCIe riser cable socket and motherboard PCIe slot when powered off Improper installation may cause a circuit short and result in hardware damage

wow slot 008 GEN PCIE PCIe riser cable socket and motherboard PCIe slot when powered off Improper installation may cause a circuit short and result in hardware damage