Features:100% brand new and high quality4 slots brings excellent extensibility.Plugs directly to the board without any extender cable, can be fixed to the case.PCI-e slot power solution, no extra power cord needed.Only one cable for the slot, easy and convenient to install and install.With big radiator, better heat dissipation effectPackage Includes:1PC x 4-Port USB3.0 Riser CardSpecifications:Brand name: pcie 1 to 4 usb3.0 adapter card for btc miner miningColor: blackMaterial: metal + plasticBus port: pci-e 1x1x pcie speed: 5gbpsPort quantity: 4x USB3.0Main Chip: ASM1184eSupported operating system: for dos, for linux, for windows xp/7/8/10note:This extension is applicable to PCI-E 1x mainboard slot, please connect the power cable to floppy disk. When pci-e extension plug should be computer broken wires plug again.The form a complete set of wire rod is customized, never grab the line to bind. Remember thisWhen the plug wire must identify the direction, not to counteract or compensate, prevent burning of the equipment, plug wire when the equipment socket first, then the plug wire, avoid the very hard pin of the socket socket is broke.