Effectively solve problem of insufficient pci-e interfaces on motherboard, one interface can be expanded to 4. The plug-in card design can be directly connected to motherboard interface without an extension cable, and can be connected to chassis, which significantly improves stability and reliability. The main control board adopts direct power supply mode of pci-e interface, and does not require an external power cord. The main control power supply is not affected by external interference and has higher stability. By reducing number of adapters and , one wire is directly connected to interface, effectively reducing interface interference and line loss, ensuring data reliability and improving work efficiency. The USB connector is gold-plated to reduce interference between interfaces and improve data integrity. Added BIOS, greater compatibility with motherboards and graphics cards, and lower power consumption. Specification: Bus interface: PCI-E X1 (compatible with X4, X8, X16 graphics interface) Number of interfaces: PCI-E X1, USB 3.0*4, molex 4 Pin Power port Colour:black Material:plastic Package Contents: 1 * PCIe Riser Card Only above package content, other products are not included. Note: Light and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.