This USB 3.0 Adapter enables you to convert an USB 3.0-B female port into an USB 3.0-A female port. Since the USB-A interface is compatible to its forerunners USB 2.0 and USB 1.1, you can still use your existing USB devices. - USB 3.0 specification - Connector: USB-B male > USB-A female - Data transfer rate up to 5 Gb/s - Connector nickel-plated.