2 Port SuperSpeed Plus USB 3.1 PCI-Express Adapter (Type-C Port x2)

Condition : Brand New with 1 year limited warranty Upgrade your MacPro with SuperSpeed Plus USB 3.1 Port, 20x faster than Build-in USB 2.0 Port Compatible Mac Model : Apple MacPro 3,1-5,1 from 2008-2012    *MacPro3,1 will need 16x lane PCIe slot for Best performance  Compatible OS X : Mountain Lion 10.8.5 to Yosemite 10.10.5 , macOS Sierra 10.12 or later, Monterey 12.x to Sonoma 14.x % Sequoia 15.x  !! (Native Support, NO Driver needed)  *El Capitan 10.11.x (Driver required, included)   *NO External Power Needed , just the PCIe slot power is good enough to drive**    Specification Supports dual USB 3.1 Gen. 2 Type-C ports Supports 4-Lane PCI Express Base Specification Revision 2.0  Complies with Universal Serial Bus 3.1 specification  Backward compatible to USB 3.0, 2.0 and 1.1 standard  Supports the following data transfer rate 10G, 5G, 480M, 12Mbps  Max. 5V/3000mA power output to each USB Type-C Port Fully Plug and Play compatible Employs Solid State capacitor for durability Hot-swap