Item Type: PCI E to USB Expansion Card Hub <br>Product Material: PCB <br>Interface: 4 x USB2.0 <br>Applicable Slot: PCI E <br>Main Chip: ASIX MCS9990 <br>Feature: <br>Compliant with PCI Express Specification Version 1.1, Bus Bandwidth 2.5gbps <br>Compliant with USB Specification Version 2.0 <br>Compliant with USB EHCI Interface Protocol Version 1.0A <br>Compliant with USB EHCI Interface Protocol Version 1.0 <br>External Power Connector Provides More Power to the USB Bus1、4 Ports: A USB expansion card upgrades your desktop computer to 4 USB 2.0 ports via a PCI Express x1 slot. Solve the problem of less USB ports inside the computer host, allow to connect more USB data devices to your computer system, large 4pin power supply. <br>2、Transmission Speed: PCI E to USB expansion card complies with USB 2.0 specification and OHCI protocol, low speed (1.5Mbps)/full speed (12Mbps) and EHCI protocol, high speed (480Mbps). <br>3、Wide Compatibility: Internal USB Hub is compatible with for Windows 7/8/10/,for Linux and for OS X operating systems, suitable for PCI Express x1 to x16 slots (no driver required for systems above for Windows XP). <br>4、Support Hot Plug: 4 Ports PCI E to USB Hub plug and play, the device supports hot plug, easy to use. <br>5、Wide Application: The USB expansion card adapter can be used with various USB devices on the market, such as printers,card readers, cameras, scanners, etc.1 x&nbsp;PCI&nbsp;E&nbsp;to&nbsp;USB&nbsp;Expansion&nbsp;Card&nbsp;Hub<p>1 x Metal Baffle</p><p>1 x Screw</p>