High Point Second Generation Quad PCI-Express 2.0 x4 HBA USB 3.0 Port RocketU 1144B 5Gb/s per port PCI Express 2.0 x4 Quad-Port: Four USB 3.0 ports with type A connectors for easy data access 20Gb/s transfer bandwidth 2 ounce (oz) copper PCB layer for robust transfer performance and improved energy efficiency Optimized for external USB drives and drive enclosures Backwards compatible with USB 2.0 & 1.1 Compliant with xHCI (Extensible Host Controller Interface) Specification