Host Adapters
U3-PCIE2XG221 [Phased Out]
2-port (Two Std-A) USB 3.1 to PCI Express x4 (x2 mode) Gen 2 Host Card
Firmware, Drivers, Utility
Version: 1.16.451  
Content: USB 3.1 Host Controller Driver For Windows 7, Windows 8, Windows 8.1, Windows 10, Windows server 2003, Windows server 2008, Windows server 2012 R2 x64 Download

Version: 1.16.381  
Content: USB 3.1 Host Controller Driver For Windows 7, Windows 8, and Windows 8.1, Windows server 2003, Windows server 2008, Windows server 2012 R2 x64 Download

Version: 1.16.251  
Content: USB 3.1 Host Controller Driver For Windows 7, Windows 8, and Windows 8.1, Windows server 2003, Windows server 2008, Windows server 2012 R2 x64 Download

* Specifications subject to change without prior notice