Features 4 external USB (Universal Serial Bus) 3.0 Super Speed ports Expands your computer via the PCI Express slot with 4 x USB (Universal Serial Bus) 3.0 port Supports USB (Universal Serial Bus) 3.0, USB (Universal Serial Bus) 2.0 & USB (Universal Serial Bus) 1.1 Data transmission: Super Speed (5 Gbps), High Speed (480 Mbps), Full Speed (12 Mbps) & Low Speed (1.5 Mbps) Easily add four additional USB (Universal Serial Bus) 3.0 ports to your computer with this PCI Express card. This card is the simplest & most cost effective way to permanently add four 5 Gbit/sec external USB (Universal Serial Bus) 3.0 ports to your computer.