Silicon Power SPPU3V10 Internal USB 3.0 interface cards/adapter

2x USB 3.0, PCI Express 2.0, 46g Add two external USB 3.0 ports to desktop computer with a PCI Express slot
Connection bandwidth up to 5Gbits per second (USB 3.0 mode)
Built-in 4-pin power connector for receiving extra power supply from system.
Installs easily in any PCI Express slot, including x1,x4,x8 and x16 slots
Compatible with USB 2.0 and USB 1.1 devices
Supports PCI Express Card Electromechanical Specification 2.0
Supports PCI Bus Power Management Interface Specification revision 1.2
Compliant with Intel’s extensible Host Controller Interface (xHCI) specification revision 0.95