SI-PEX60017 board with 4 holes available on PCI-E 16X side to fix PCI-E 16X connector on motherboard for more convenient management for graphics card. Thin and fast USB 3.0 cable available to connect PCI-E 1X and PCI-E 16X sides for more free installation and faster data transfer for graphics card. Molex 4 pin power connectors available for more stable operation for graphics card while mining. Install PCI-E 16X device to PCI-E 1X slot freely according to dimension, position of motherboard and case. One end is PCI-E 16X female and another end is PCI-E 1X male.