Description: Function: Dedicated for bitcoin mining.Use for graphics card mining PCI-Express 1 to 4 Slot: 4 Slots PCI-E X1/X4/X8/X16 brings great extendability. Easy Install: Only one cable to the slot, easy and convenient to settle and install. Plug In Board Design: Plugs directly to the board without any extender cable, can be fixed to the case. High Quality PCB Board: PCI-E 1x to 16x Riser Card is resistant to high temperature and cold, and does not deform after long term use, so as to ensure stability for a long time Specification: Compatible with X1/X4/X8/X16 slot Size: approx.120x66x56mm/4.72x2.60x2.20inch Working environment: 0 -70 centigrade Supported for Windows XP/Win7/WIN8/WIN8.1/WIN10 (USB devices are not supported) Package Includes: 1 Piece PCI-E Riser Card Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!