can i use pci express x8 in x16 slot - Mainboard ASROCK B450 STEEL LEGEND riches888 pg slot

4 x DDR4 DIMM Slots, Max. capacity of system memory: 64GB. ... - 2 x PCI Express 3.0 x16 Slots (PCIE1: x8 mode; PCIE4: x4 mode) (If you use Athlon 2xxGE series ...

A PCI Express card fits into a slot of its physical size or larger (with x16 as the largest used), but may not fit into a smaller PCI Express slot; for example, a x16 card may not fit into a x4 or x8 slot.

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