Effectively solve the insufficient PCI-E interface of the motherboard, and one interface can be expanded to 4. The plug-in design is adopted, which can be directly connected to the motherboard interface without extension cables, and can be fixed to the chassis, greatly improving the stability and reliability! The main control board adopts the direct power supply mode of PCI-E interface, and no external power cord is required, so that the power of the main control board is not by the outside world, and the stability is higher. Reduce the number of adapters and adapter wires, one wire goes directly to the interface, effectively reducing. Interface interference and wire loss data reliability, thereby improving work efficiency. Advantage 5 The USB connector is gold-plated to reduce interference between interfaces and enhance data integrity. Model: PCE4PCE-A41 Bus interface: PCI-E4X (compatible with 4X8X16X) Number of interfaces: PCIE_USB interfacex4 Product size: 120mmx55mmx75mm System support: DOS, LINUX, WINXP, WIN7, WIN8, WIN10, etc. Note: Because the low-end motherboard chipset does not support multiple graphics cards, it is recommended to use a motherboard above B250 Material:PCB colour:Black Package contents: 1 x 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.