The silverstone ECU03 is a USB 3.1 expansion card with external Type a and Type C connector. It offers 10Gbps bandwidth for excellent stability and transfer rate when multiple external USB devices are in use simultaneously. The ECU03 is also backwards compatible with USB 3.0/2.0/1.1 and supports UASP (USB attached SCSI Protocol) for enhanced performance. For operating systems with xhci (extensible host controller interface), the ECU03 will easily install without the need for any drivers because it also supports xhci. For those looking to upgrade or add additional USB 3.1 ports or devices to their computer, the ECU03 is a great starting point.