Features: High-quality imported electronic components, multi-level anti-interference and isolation for protection circuit. Multi-power automatic switching (support soft start). EXP GDC is an external graphics adapter device for notebook computers; it can help you use external independent high-performance graphics, which can be used to access any PCI-E interface device to enhance the performance of the notebook computer, so that you can for play those demanding Large game with performance graphics. Of course, in the for case of engineering measurement, data collection, server debugging, GPU computing and other industrial applications, it will still be used to access most graphics cards to for play games. It has a 6pin interface, used to connect to the power supply of the graphics card; an 8-pin interface, used to connect to the EXP GDC power supply. Specifications: 1. Support Interface : PCI-E X16 2. Input Interface : for M.2 A for Key 3. Extand Support : PCI-E X16 DMI 5 GT/s 4. Power : Max. 220W(8Pin interface)/Max. 150W(for DC interface) 5. USB : 1.0/1.1/2.0 6. Compatible system : for Windows XP/7/10,Linux Package Includes: 1 * Power cord 1 * EXP GDC adapter 1 * cable note: 1. Usually the laptops with correct interface can work with our products , but some laptops can not work with it because different design or configuration (such as white list issue or BIOS limit, even some interfaces limit). Not all model of laptop support to use this product. You need to learn it fully before buy it. 2. Some laptop has both 2 of the interfaces , but it just support to use one of interface to connect external graphic card. For example the T420 , it can use Expresscard interface to use this product , but can not used on wireless card interface (for M.2A/E for Key ). 3. Some old model laptops must use 1 piece of 2GB memory-chip to use this product. Especially the laptop use the mainboard before HM65 ( less laptops model use mainboard after HM65 also need to use 1 piece of 2GB memory-chip ) 4. If your laptop do not support connect to the external graphic card by EXP GDC , or you choose the wrong interface cable for your laptop , we can not refund the money of product. You can buy the correct inteface cable to solve it. 5. When use the for m.2 a/e for key , some laptop may have the white list problem. Because these laptops may not be connected to the for M. 2 A/E for key using products other than those specified by the manufacturer. To solve this problem, you need to learn to refresh the BIOS. BUT refresh BIOS has high risk for your laptop. If you are not good for it, please do not do it.