Purchased to connect the internal connector of my usb3 Gigabyte Z97X-Gaming 3, this accessory allowed me to spend February-April usb3 ports. So ok, I have not taken all the ports, but two of these ports are used to recharge myself tablet and phone. These two are certainly in usb2, but the intensity of the usb3 is such that it allows me to load three times faster compared to my devices to the USB2. Regarding usb3 rates, no worries, my hard drive usb3 is 60% faster on usb3 the USB2, and there is no loss of speed compared to the integrated ports.