Description: PCI-E X1 to PCI-E X16 expansion card, stability, high compatibility, high-speed transmission Effective solution to the motherboard PCI-E interface is not enough, an interface can be extended out of four interfaces The use of plug-in design, without access to the motherboard directly through the extension line interface, and can be fixed to the chassis, the stability greatly improved The main control board uses PCI-E interface direct power supply, no need to connect the power cord, so that the main control board power from external interference Effectively reduce interface interference and wire loss, to ensure data reliability, thereby enhancing work efficiency Specification: PCI-E a turn four expansion card Bus Interface: PCI-E X1 (compatible with X4, X8, X16 / graphics interface) Number of interfaces: PCIE_USB interface x4 System Support: LINUX, WINXP, WIN7, WIN8, WIN10 Package Includes:(2 Pack) 1x Adapter Card