This USB 3.0 adapter by Delock can be used for connection of devices with USB-A and USB-B interface. Furthermore the USB-A interface is compatible to its forerunners USB 2.0 and USB 1.1 so that you can still make use of your existing USB devices. - USB 3.0 specification - Connector: USB-A female > USB-B female - Data transfer rate up to 5 Gb/s - Connector nickel-plated.htt