Version 007S riser kits are the newest and top of the line solution for setting up GPU mining rigs. 4PIN and Two Graphic card 6PIN interface are optional to power, which provides Graphic card independent power and reduces motherboard burden when using more Graphic cards. 4 Solid Capacitors, 60cm USB 3.0 cable, Suitable for all Window systems, LINUX and MAC. Our store directly from the factory wholesale sales. If you want to buy a lot of products, would you please take the initiative to contact us.