Features: brand new and high quality 6 slots offer great extension capacity. It connects directly to the board without any extension cable, it can be fixed to the for case. PCI-e slot solution no for extra power need cable. Only one cable to the slot, easy and convenient to install. With IC heat radiator. Specifications: Type Name: 1 to 6PCI-E USB3.0 Adapter Card for BTC Mining Color: Green Material: Metal + Plastic Bus Port: PCI-E 4X PCIE 4X speed: 20Gbps Port quantity: 6 x USB3.0 Main chip: ASM1812 Compatible operating system: for DOS, for Linux, for Windows XP / 7/8/10 Note: 1. This extension is applicable to the 4X pci-e slot on the motherboard, please connect the power cable for the floppy disk. When connecting the pci-e extension there must be broken cables from the computer to plug in again. 2. The shape of a complete set of wire rod is customized, never grasp the line to plug. I remember that! 3. When the plug wire should identify the direction, not for counter or compensation, prevent the equipment from burning, connect the wire when the equipment plug first, then connect the wire, avoid the plug too hard to break. Package includes: 1 x 6-Port USB3.0 Riser Card for BTC Mining