PCIe lane sharing happens when you have components in the PCIe slots and they're using up all the PCIe lanes your CPU ...

Following its own testing and evaluation of an "extremely small number of cases reported", Asus says it does not expect any damage to occur when using motherboards with its PCIe Q-Release Slim slots.

In total, it’ll quadruple the available bandwidth over existing PCIe 5 slots, along with making improvements to efficiency and latency. Here’s everything we know about PCI Express 7 so far. MSI ...

Following its own testing and evaluation of an "extremely small number of cases reported", Asus says it does not expect any damage to occur when using motherboards with its PCIe Q-Release Slim slots.