[Compatibility]This pcie 1 to 4 riser card is compatible with Compatible DOS, LINUX, WINXP, WIN7, WIN8, WIN10 . Compatible with X4, X8, X16 slot. [Stability]The main board adopts the PCI-E interface and the direct power supply mode does not need an external power supply, so that the main board power is free from external interference. [Convenience]Solve the quantity of port of PCI-E , 1 port can be extended to 4, one line directly to the port, effectively reduce the loss of interface interference and wire. [Efficiency]Reduce the number of adapter and adapter line, one line directly to the interface, effectively reduce interface interference and wire loss, to data reliability, so as to improve work efficiency. Colour:blue Material:Plastic + Metal Package Contents: 2 * PCIE 1 to 4 Adapter Riser Card Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.