IOCrest SY-PEX20140 2 port USB 3.0 and 19 pin internal USB 3.0 header PCI-Express x1 card provides your desktop PC with 4 additional USB 3.0 ports. With a PCI-E slot and a 4 pin power cable, enjoy 10x faster transfer speed compared with USB 2.0. USB 3.0 is the latest generation of USB technology, boasting enhanced transfer rates of up to 5 Gbps, which means you can copy videos, music, photos, data files between USB devices and the computer at blazing fast speeds.