StarTech.com 4-Port PCI Express SuperSpeed USB 3.0 Controller Card with UASP - 5Gbps - USB 3.0 Expansion Card with SATA Power , TAA (PEXUSB3S4V) ^Sale

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 commands 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).