Gravicoin SATA/Peripheral Powered PCIe 1x to 16x USB Riser - 100cm Generous 100cm / 3.3 foot flexible USB 3.0 cable, requires no drivers or special tools PCIe 1x motherboard interface, locking PCIe 16x GPU interface to allow use of 1x motherboard slots for mining Powered by Peripheral or SATA (adapter included) to ease the load from your motherboard Best method for building an open-air or crated mining rig; no flimsy hand-soldered ribbon cables Color of cables and boards may vary