New USB 3.0 PCI-E Expansion Card Adapter External 2 Port USB3.0 Hub Internal 19pin Header PCI-E Card 4pin IDE Power Connector Features: 1.USB 3.0 supports transfer rates of up to 5 Gbps. 2.Each interface is equipped with an independent voltage regulator capacitor, which can ensure that the interface power supply is stable and can withstand a high temperature of 250 degrees! 3.Compatibility:for Win xp/Vista/win7win8, win10 and other mainstream systems 4.With IDE 4Pin Power Supply Connector and the back end of the card is equipped with a USB3.0 19PIN pin header 5.Easy to install in the chassis slot for better contact and easy data transfer. Specification: Product name: U3V212 Chipset Model: VL805 Bus Type: PCI-E x1 Compatible Slots: PCI-E x1 / x4 / x8 / x16 Network interface type: 2*USB3.0; 1*large 4P power interface; 1USB3.0 pin header USB Interface: 2 USB3.0 ports Transmission Rate: USB3.0, 5Gb / s Support Operating System: Windows XP 32/64, Windows 7 32/64, Windows8, Windows8.1, Windows10 Package Weight: 80g Package Included: 1 x PCI-E To USB3.0 Expansion Card 1 x Screw 1.Using high-quality materials 2.Bring a better experience to your daily life 3.Decorative and functional for your home, office, or dorm room 4.Convenient to use 5.Please read the instructions carefully when you buy so as not to confuse the model or type