pcie x16 graphics card in x8 slot

rx 550 recognizing pcie x16 slot as x8 x8 slot PCIe cards can always operate in PCIe slots with the same or more lanes than the card For example, an x8 card can operate in a slot with x8, x16, or x32 lanes aluminum extrusions tslot Hi, We are designing a x8 PCIe card and the required power is 30W The slot available is x16 capable Can we draw 30W of power from x16 slot

garage door mail slot QIP4X-D4XD01 is a PCI Express x8 Gen 3 to Two PCIe x16 slots docking system