Description: As it uses plug and play, it does not need a driver. Gold plated USB3.0 interface makes it have good connectivity and long service life. PCI-E riser card makes the power supply stable and reliable with 4 solid capacitors. Made of EVA and metal high quality material, it is safe and reliable. The length of the mainboard is 12.7cm, the width is 4.3cm and the height is 1.5cm. It is suitable for GPU, miner, mining. It has 3 LED indicators. And it requires a separate power cord to power it. Item Name: PCI-E 16X Riser Card Material: Metal,EVA Transmission Speed: 1000MB/s Interface: PCI-E 1X, PCI-E 16X, USB3.0 Compatible System: All for Windows Systems, for Linux Mac Size Details: Mainboard Size: 12.7cm x 4.3cm x 1.5cm/5" x 1.69" x 0.59" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x PCI-E 16X Riser Card 1 x PCI-E 1X Riser Card 1 x USB 3.0 Cable 1 x Power Cable