Explaining PCIe Slots

Thunderbolt 4 PCIe x16 Graphics Card Expansion Dock pcie x16 expansion slot Expansion Chassis · Fanless PC · Front IO · HMI Panel PC Systems · ISA Slot Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8 connection pciex16 slot configuration Expansion Slots ITFreeTraining•34K views · 10:39 Go to channel · I Will PCIe x1 x4 cards

pcie 4 gpu in pcie 3 slot No, I don't believe it is It looks to me like pcpartpicker has assigned the Gigabyte wifi card to PCIe first, taking the top x16 slot; and then it doesn't know