SuperSpeed+ 10Gbps USB PortsAdds four 10Gbps USB-A ports to your Mac Pro or Windows PC computer with PCIe slots; or Thunderbolt to PCIe card expansion system Dual USB 3.2 Gen 2 ControllersSupport data transfers at up to twice as fast as USB 3.0 and USB 3.1 Gen 1, and boost data transfer speeds between connected drives Powered PortsSupports USB bus-powered SSD, SSD RAID, and hard drive devices with up to 7.5W power per port Protected Power DeliveryIndependent power regulation isolates each port to prevent cross-coupled power glitches that may cause accidental disconnects; resettable device overcurrent fuses protect the card and computer, and may be reset by a simple shutdown Mac, Windows 11+, and Linux Compatible. 2-year warranty and free lifetime customer support since 1986