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This 4-Port SuperSpeed USB 3.0 PCI Express Card with SATA Power adds tyhree external USB 3.0 ports and an internal USB 3.0 port to any PCI Express-enabled computer system. With SuperSpeed USB 3.0, you can reach data transfer speeds up to 5 Gbps, while still being backward compatible with existing USB 2.0 devices at 480Mbps.
With a built-in SATA power connector, each USB port can provide up to 900mA of power to USB 3.0 devices (500mA for USB 2.0) by connecting to your computer power supply. Compatible with both Low profile/half-height or Full profile computer cases, this card is backed by a StarTech.com's 2-year warranty and free lifetime technical support.