Features: 1.5GBPS TRANSFER SPEED: Desktop PC expansion card is USB 3.1 compliant and supports low speed, full speed, and high speed transfers up to 5Gbps. 2.MULTIPLE INTERFACE OPTIONS: 5 ports USB 3.1 PCIe expansion card has 2 x USB A and 3 x TYPE C ports, convenient for you to connect multiple USB devices to meet different needs. 3.COMPATIBLE SYSTEMS: USB 3.1 expansion card is compatible with iOS, supports PCI Express2.0 X 1 interface, and is compatible with multiple operating systems such as for Windows 7 8 10 and for OS X 10.8.2. 4.HIGH CURRENT OUTPUT: USB 3.1 PCIe expansion card adopts high current output, the maximum current of each USB3.0 port is up to 900mA, providing stable power supply for your devices. 5.EASY INSTALLATION: 5 ports USB 3.1 PCI Express expansion card socket type PCIe X4, X8, X16, no external power supply, simple and convenient to install and use. specification:Item Type: 5 Ports USB 3.1 PCIe Expansion Card Material: PCB Model: UP5300 Number Of Ports: 2 x USB A, 3 x USB Type C Transfer Speed: 5Gpbs Socket Type: PCIe X4, X8, X16 Compatible Systems: For Windows 7 8 10 And For OS X 10.8.2 External Power Supply: No External Power Required PackageList:1 x 5PortsUSB3.1PCIeExpansionCard 1 xDriverCDROM 1 x Instruction Manual 2 x Screw