À quoi sert le port PCIe x1 ?

NVMe x4 adapter card for PCIe x1 slot pcle x1 slot SATA card for PCIe x1 slot with 8 ports Bizarro pcle x16 slot The slot 4 is the PCIe X1 slot; it is the correct slot where you can fix the PCIe X1 cards

pcle x1 slot Yes any pcie xanything card will work in a x16 slot, i have a pcie x1 asus xonar stx in a 16x slot right now x4 and x8 cards will also work in