Features: 1.For VIA Labs master chip, such expansion card can also support he third generation product VL805 with 4-port main control. 2.Converter card works without plugging external SATA interface ,which can be practical. 3.The expansion card uses 2 high-performance solid capacitors, which greatly keeps stability of the USB power supply. 4.Support small chassis, such Type?C riser card support hot plug function. 5.Meanwhile, this adapter card is suitable for Windows XP / 2003 / Vista / win7 / win8 / 2003/10 and above. specification:Item Type: Expansion card Compliant Version: Compliant with PCI-Express version 2.0 Compliant with USB3.0 SuperSpeed version 1.0 Compliant with xHCI version 1.0 Main Control Chip: VL805 chipset Highest Transmission Rate: Up to 5Gbps, much higher than the 480Mb / s of USB2.0, up to 10 times; Backward Compatibility: USB2.0, USB1.1, USB1.0 Transmission Rate: 5000/480/12 / 1.5Mbps USB Power Output: Up to 5V 2A (increased current type) Built-in SATA: Enhanced power-on interface Support: USB hot plug function Support: For Windows XP / 2003 / Vista / win7 / win8 / 2003/10 and above Interface: USB3.0 Interface Speed: 5GBPS Support: 2U small chassis support, with half-height baffle Working Environment: 130-70 PackageList:1 x Expansion Card1 x Half Height Baffle