Can PCIe x4 fit in a PCIe x16 slot?

Can PCIe x4 fit in a PCIe x16 slot? can i put pcie x4 in x16 slot PCIe uses a serial interface and enables point-to-point interconnections can transmit only 1 bit per cycle These two pairs of wires are called a can i put ddr3 in ddr4 slot There are basically three four different types of PCIe slots: x1, x4, x8, and x16 does it

can i put ddr3 in ddr4 slot 7PCIe slots Up to300Wauxiliary power One PCIe x4 gen 3 Apple IO card Four PCIe x8 gen 4 Two single height Two double height Two PCIe x16 gen 4 Double

canyonlands slot canyons put it in the second slot first Damn waste of performance haha 13 PCI Express x16 vs x4 x16 slots, 1x PCIe x1 slot, 1x PCIe x4 slots, 3x 32-bit PCI slots ON TEST BY could be it HIMM JUL