PCIE 1 to 3 PCI Express 1X Slots Card to External 3 PCI-e Slot

You can however use PCI-E 1x in a PCI-E 2x, 4x, 8x, 16x, 32x slot (and even technically the other way too, you can use PCI-E 16x slots in 1x

In real applications, insert the PCIe card into the host or server PCIe slot

pcie slot meaning 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

pcie4 slot x32 You can see a x4 here: http: Will this x4 PCIe card fit in the x16 slot of a Dell PowerEdge r310?