PCIe-Bifurcation X16 to X8X8 PCI-E 4.0 X16 1 To 2 Expansion Card Gen3/Gen4 Split Card Features: 1.PCIE X16 full bandwidth 4.0,GEN4 protocol Compatible with gen3\gen4(may need specific conditions to work in full GEN4 state) 2.Requires motherboard BIOS support to change PCIE working mode to X8X8 3.Gold finger immersion gold process,increase gold thickness to 5U 4.Using LOTES new generation GEN4 connector with small snap 5.With 1 divided by 2 clock split IC.with power-on LED indicator 6.With SATA power supply port,can support ITX small chassis 7.Dwarf PCB design to minimize the size,2CM slot spacing 8.Supports installation of two PCIE cards,and maximum work at X8 performance 9.Can be used with PCIE extension cable(may make it work in GEN3 state) Package includes: 1*Expansion Card(optional) Note: Only include the above package products Please allow 0-1cm error due to manual measurement Please make sure you don't mind before bidding Due to the difference between different monitors Pictures may not reflect the actual color of the item.Thanks