What exactly does the spec “PCIe x16 slot ” mean?

PCIe slot and SATASATA Express confusion pcle slot
➡️【Mk.com】✅Signing up is easy! ✅In just a few minutes, you can create a free account and get ready to explore our rich game library. Enjoy it...✅  How to Enable a PCI Express Card Slot · 1 Open the BIOS menu · 2 Select the “Advanced” tab using the leftright arrow keys · 3 Select the “Video pcle x16 slot Enabling or disabling PCIe Slot Network Boot · From the System Utilities screen, select System Configuration > BIOSPlatform Configuration > Network

pcle x1 slot 2, for a PCIE based it will pull form the x4 slot beneath it This was to give you the flexibility of SATA based drives or PCIE based drives