What can I plug into a pcie x16 slot?

What does x4 bandwidth mean on a PCIe x16 slot? pcie 2 0 x16 slot Yes PCIE card will work with PCIE x 16 slot But PCIE card can work only at a max speed of Gen2 It can't work at pcie x1 in x16 slot Taking a look at the slot may not help you to specifically determine whether your motherboard has a PCI express port

pcie slot height PCIe x16: This is the largest PCIe slot with 16 data lanes PCIe x16 slots PCIe : Released: 2007; Max Bandwidth per Lane: 500 MBs; Max Bandwidth