High Point RocketU 1144A SuperSpeed USB 3.0 PCI-Express 2.0 x4 4-Port Card 4 USB 3.0 Super Speed Speed Type-A ports (5Gb/s per port) PCI-Express Gen 2 x 4 Supports up to 4 external USB HDD/SSD Optimized for external USB drives and drive enclosures Max Performance up to 2GB/s Backwards compatible with USB 2.0 and 1.1 Hot-Swap and Hot-Plug Driver support for Microsoft Windows 7, 2008, Vista, and Linux distributions