Features: Supports 5 x USB 3.0-TYPE-A  1 x19PIN 5Gbps. Hot-swapping feature allows you to connect/disconnect devices without powering down the system. Operating Systems: Windows XP, Vista and Windows 7 (with included drivers) Windows 8/8.1/10 - No additional drivers are needed for Win8/8.1/10 Windows XP and Vista Users Please Note:Due to OS limitations, the real transfer speed after installation of the respective drivers will be located between the level of USB 2.0 and 3.0Specification: Name: 5-port USB3.0 expansion card Main control chip: Renesas uPD720201+Genesys GL3520 Bus interface: PCI Express x1, x2, x4, x8 or x16 socket Interface: USB3.0 interface x 5 Size: approx. 12 * 8.2 * 1.8 cm/ 4.72 * 3.2 * 0.7in Weight: Approx. 92.5g / 3.3ozPackage list: 1 x 5 Ports+19PIN PCI-E to USB 3.0 Expansion Card 1 x Driver CDNote: This PCI-E card is only compatible with standard-sized tower cases (not mini computers). To ensure sufficient power supply and smooth transfers,particularly for large data transfers,it is necessary to connect the card to the power supply of the PC.