Features: brand new and high quality This PCI-E adapter card can convert 1 PCI-E X1 card slot of the computer motherboard into 4 PCI-E card slots at the same for time. 4 PCI-E card slots can be connected to sound cards, graphics cards, network cards, etc. at the same for time , can work independently without interfering with each other. This product does not need to install the driver, it can be used by inserting it into the computer card slot Device card is used to transfer between PCI-E and PCI-E.Easy installation, fully plug and for play, convenient and efficient. Customized for mining BTC. Support 4 port high speed PCIe 1X card. Solid capacitor provide for extra stable power supply for PCI-e card A perfect solution for expanding PCI-e support in crowded systems or on motherboards with limited or minimal PCI-e ports.Supported operating systems: Linux / XP / for Windows 7/8 / 8.1 / 10 Specifications: Product Type: LPE-41X 1 to 4 Ports Product Color: Blue Product Interface: PCI-E slot Transmission speed: 10/10 / 100Mbps Product Performance: suitable for PCI-Express card slot motherboard, plug and for play Product features: A perfect solution for expanding PCI-e support in crowded systems or on motherboards with limited or minimal PCI-e ports. Supported Operating Systems: Linux / XP / for Windows 7/8 / 8.1 / 10 Size: Mixed Support PCIE 3.0 Package Includes: 1PC x PCI for Express Slot Board 1PC x Mini Pcie Card Cable 1PC x Power Cable 1Set x Screws note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.