Bandwidth speed to and from GPU about 14 of PCIe4 x16 on

How to tell what version of PCI Express slot your system has? pcie4 slot I bought ConnectX-5 model, but my computer does not have slot only has slot is it compatible when i mount this card on best stake slot I'm wanting to add an NVMe SSD to my Omen 30L GT13-1094 Does the slot directly below the CPU support the faster gen 4 NVMe

download free slot NVMe PCIe drives in a PCIe slot would see their sequential read and write speeds drop below 4000MBs, but random and larger write and