2 Port SuperSpeed USB 3.0 PCI-Express Adapter

Condition : Brand New with 1 year limited warranty   Upgrade your MacPro with SuperSpeed USB 3.0 Port, 10x faster than Build-in USB 2.0 Port Compatible Mac Model : Apple MacPro 1,1-5,1 from 2006-2012  Compatible OS X :  Snow Leopard 10.6.x to Yosemite 10.10.5 ( Require Driver *included )  *NOT Support OS X El Capitan 10.11 or later  Bootcamp Supported ( windows 10 / 8.x / 7 / Vista / XP 32/64-bit ) Specification  Complies with PCI Express Base Specification Revision 2.0   1x Lane interface with throughput up to 5 Gbps   Complies with Universal Serial Bus 3.0 specification Revision 1.0   Backward compatible to USB 2.0 and PCI-Express 1.0  Complies with eXtensible Host Controller Interface (xHCI) Specification Revision 1.0   10 times faster than High-Speed USB 2.0*  Equips with 2 independent USB 3.0 Ports   Backwards compatible to USB 2.0 /1.1/1.0 devices  Supports the following data transfer rate:  - USB 2.0 mode up to 480 Mbps*  - USB 3.0 mode up to 5 Gbps*   Supports Bulk Only Trans