PCIE To 4 USB3.0 Ports Expansion Card PCI Express To USB3.0 Adapter Card With Large 4Pin Power Interface For Desktop PC Extends USB3.0 interface on PC with PCI-Express slot. USB 3.0 output ensures fast transfer rate up to 5Gbps that is much higher than USB2.0.Comply with USB3.0 interface specification, compatible with USB 2.0, 1.1.Adopt VL805 USB3.0 main control chip, it has better stability and compatibility than ordinary chips. Built-in A-level voltage stabilizing components, enhance the protection of power supply voltage stability, intelligent and fast, reduce power loss, ensure high-speed and stable data transmission. Use high performance and high quality electronic components, low impedance, high stability and high temperature resistance, ensure the safe operation of the machine. Easy installation, plug and play, convenient and efficient. Specification:Item name: Expansion cardSupport system: Windows XP/Vista/Win7,Win8,Win 10,etc. Material:ABScolour:As ShownPackage Contents:1 x Expansion CardOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.