Specification: Features: 1. 4PIN and two graphics card 6PIN port are optional power supplies, which can provide power independent of the graphics card and reduce the weight on the motherboard when using more graphics cards. 2. 4 solid capacitors, 60 cm USB 3.0 cable, suitable for all Window systems, for LINUX. 3. 180 degree PCI-E to USB adapter, easy to install and can be installed in a few minutes, simple operation. 4. Meticulous workmanship: The meticulous design, perfect in workmanship, durable and long service life. 5. High performance and great reliability, durable replacement for the old or damaged one, no longer need to worry about not finding the right accessories. Package List: 1 x PCI-E 16X Riser Board 1 x PCI-E 1X Adapter Card 1 x 60cm USB 3.0 Riser Cable 1 x 15 Pin to 6 Pin Power Cable