This combination PCI Express controller card lets you add both a USB 3.1 Gen 2 port and an eSATA port to your desktop PC, through a single PCIe slot. The versatile controller card offers a cost-effective way to add high-performance connectivity to your computer, with support for newer USB 3.1 devices as well as eSATA hard drives. Fast transfers over USB 3.1 Gen 2 At up to 10Gbps, the USB 3.1 PCIe card delivers the speed you need for seamless performance from your compatible devices. It's also backward compatible with previous versions of USB, so you can connect your existing USB 3.0 / 2.0 / 1.1 equipment. Connect to eSATA devices The controller card also connects your computer to an eSATA device, providing a hot-pluggable, high-speed storage solution for backing up or archiving data. With support for SATA I, II and III hard drives, and data transfer speeds of up to 6Gbps, the controller card offers reliable performance for your external SATA storage applications. Versatile installation options For added versatility, the controller card is equipped with a standard-profile bracket and includes a low-profile bracket for installation in small form-factor computers. The PEXUSB311A1E is backed by a StarTech.com 2-year warranty and free lifetime technical support.