Features: brand new and high quality 7 Slots brings great extendability. Plugs directly to the board without any extender cable, can be fixed to the for case. PCI-E slot power solution, no for extra power cable needed. Only one cable to the slot, easy and convenient to settle and install. With IC heat radiator. Specifications: Type name: PCIE 1 to 7 USB3.0 Riser Card for BTC Miner Mining Color: Black Material: Metal + Plastic Bus Port: PCI-E 1X USB Port: USB3.0 Port Quantity: 7 x USB3.0 Main Chip: ASM1187E Supported OS: for DOS, for Linux, for Windows XP/7/8/10 Note: 1. This extension is applicable to the mainboard PCI - E 1X slot, Please plug in the power cord for the floppy. When plug PCI - E extension must be computer broken wires plug again. 2. The form a complete set of wire rod is customized, never grab line to plug in. Remember that! 3. When plug wire must identify the direction, not to counter or offset, prevent burning equipment, plug wire when the socket of equipment first, then plug wire, avoid too hard plug socket pin is broken. Package includes: 1 x 7 Port USB3.0 Riser Card for Mining