Explaining PCIe Slots

{solved}How find out if the PCIe is PCIe or PCIe ? pcie slot length The “Backplane PCIe Gen3 6 Slots” has one 64 GbitS Uplink and six 32 Gbits Downlinks Via USB the status can be querieddisplayed This Backplane is pcie 8x slot Full-length PCI cards have a specified length of 312 mm , and half-length PCI cards are specified as having a length of up to

pcie 4 slot Verilux® NVME Adapter PCIe x16 with Gel Pad, NVME or AHCI SSD to PCIE Adapter Card for Key M 2230, 2242, 2260, 2280 Size SSD, Support PCIe x4 x8