Features 1、5Gbps Transmission: USB3.0 expansion card transmission speed up to 5Gbps, with 19pin pins, can expand two USB3.0, and suitable for PCI E X1, X4, X8, X16 slots. 2、Wide Compatibility: USB3.0 has a wide range of compatibility, backward compatible with USB1.1, USB2.0, and can be adapted to a variety of USB devices to meet USB applications in various scenarios. 3、Independent Power Supply: PCI E to USB 3.0 expansion card is equipped with 2 independent power management chips, no external power supply is required, ensuring that each USB port has exclusive 2A power supply. 4、Independent Protection: PCI E expansion card adopts independent protection insurance, which can instantly cut off the power supply when the external USB device has a short circuit or excessive current. 5、Good Heat Dissipation: 5Gbps expansion card is made of high thermal conductivity material, which has better heat dissipation effect and ensures continuous safe and stable operation of the device. Specification Item Type: PCI E to USB 3.0 Expansion Card Material: PCB Transmission Speed: 5gbps Interface:2 x USB3.0,1 x 19pin Interface(Group) Slots For: PCI E X1,X4,X8,X16 Compatible System:For Xp,for Win7,for Win8,for Win8.1,for Win10,for Linux Etc. Package List 1 x PCI E to USB 3.0 Expansion Card 1 x Short Bezel 1 x CD Drive 2 x Screw 1 x Screwdriver