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

1050ti GPU only lines up with pcie x4 slot - what will happen? pciex4 slot 'PCIe x4' connections have four data lanes; 'PCIe x8' connections have eight Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8 connection god slot Two types of PCIe slot on an Asus H81M-K motherboard Various slots on a computer motherboard, from top to bottom: PCI Express x4; PCI Express x16; PCI Express

qq88 slot PCIe x4 slot has been disabled due to motherboard restrictions 4K60 Pro will not work in the x4 slot It can still be used in the available x8 and x16 slot