Startech.com PEXUSB3S4V

VERSATILE FUNCTIONALITY: The SuperSpeed USB 3.0 PCI express card adds 4 external USB 3.0 ports with support for data rates up to 5 Gbps, while remaining backward compatible with USB 2.0 / 1.x devices. ENHANCED WITH UASP SUPPORT: This 4-port USB 3.0 PCI express card uses UASP technology. UASP technology optimizes transfers by allowing multiple comm... moreands to be processed simultaneously. STACKED PORT LAYOUT: The USB 3.0 controller card places the ports one on top of the other, enabling all four USB 3.0 ports to be external facing, while fitting into a low-profile computer system. ADDED POWER CAPABILITIES: With a built-in SATA power connector, each USB port in this USB 3.0 expansion card can provide up to 900mA of power to devices (500mA for USB 2.0).

Backward compatible with USB 2.0 and USB 1.0/1.1 devices Includes a Low Profile/half-height installation bracket Optionally provides up to 900mA per USB port UASP support for more efficient data transfer Fully compliant with USB 3.0 revision 1.0 specifications and Intel xHCI rev0.95 specifications Built-in optional SATA power connector for bus... more-powered USB devices Compliant with PCI Express 2.0 specifications 4 external USB 3.0 ports in a stacked layout