Add two USB (Universal Serial Bus) 3.0 ports to your desktop computer through a PCI Express slot. The PEXUSB3S22 2-Port PCI Express Super Speed USB (Universal Serial Bus) 3.0 Card (with SATA Power) lets you add 2 USB (Universal Serial Bus) 3.0 ports to any PCI Express-enabled computer system. With Super Speed USB (Universal Serial Bus) 3.0, you can reach data transfer speeds up to 5 Gbps, while still being backward compatible with existing USB (Universal Serial Bus) 2.0 devices at 480 Mbps.