Inateck PCIe to USB 3.0 Expansion Card 5Gbps w/ 2 USB A Ports For Mac Pro.

New In box- picture of the actual item

From the manufacture:

Features

- No additional power supply for normal recognition and operation needed anymore, optimized board plane architecture, fast and easy installation, keeps your PC case tidy

- Extend with 2 USB 3.0 downstream ports and 1 USB 3.0 20-pin Connector (can expand another two USB 3.0 ports) for standard desktop PC

- Support UASP; 70% Faster than traditional USB 3.0, with UASP Transfer Protocol; The UASP Transfer Protocol only can accelerate read and write speed of SSD hard disk

Operating Systems

- Windows XP, Vista, Windows 7, Window 8 and Windows 10 (32/64-bit)

- The Expansion card is applicable to the MAC Pro (2008 to 2012 Version)

- Mac OS 10.8.2 or Mac OS 10.9.5 - This PCI-E Card is incompatible with Mac OS X 10.10 Yosemite or Above.