This versatile Startech PEXUSB3S11 PCI Express USB 3.0 Card adds one internal and one external USB port to PCs, providing additional functionality and device connection. This easy-to-install component provides data transfer speeds up to 10 times faster than USB 2.0 and can support transfer rates of up to 5GBps. The Startech USB 3.0 card is a low-profile bracket that is backward compatible with older USB 2.0 and 1.1 models and speeds of 480Mbps and 12Mbps, respectively. This aftermarket add-on accessory features two sleek silver brackets to accommodate different sizes in computers and is lightweight and compact. The 2-port USB card comes with an easy-to-use driver disc to help with installation, allowing computers to register the device quickly. Included in the box is an instruction manual, providing quick and easy support for installing the component.