Features and specifications : 4 x USB 3.0 Port support transfer speed up to 5Gbps ( 2 external + 2 internal (20 pin connector) ) 1 x PeSATA Port ( External ) USB 3.0 : Support Windows 8 UASP No driver needed for Windows 8 and Windows 10 ( do not install driver in Windows 8 ) Fully compliant with PCI Express Base Specification Revision 2.0 Single-lane (x1) PCI Express Throughput Rates Up to 4.8Gbps Compliant with Universal Serial Bus 3.0 Specification Revision 1.0 Fully compatible with USB2.0 , USB 1.1 Transfer Rate: 5Gbps 480Mbps, 12Mbps NEC uPD720201 Chipset 4 Pin Molex Power Connector PeSATA : This port can be connected as eSATA, PeSATA Combine with our Power over ESATA cable ( not included in package ) , both 2.5' and 3.5 HDD can be supported without power supply from other sources. Specifications : Connect direct to SATA Hdd Data transfer up to 6Gbps ( SATA III, depends on your mother board SATA port specification) Supports WinXP, Win Vista and windows 7/8/10 Package contents : 1 x PCIE USB 3.0 / PeSATA adapter 1 x Driver CD 1 x User manual