The USB OTG adapter by Delock can be plugged into a USB A male port. Therefor the USB A male will be converted into an OTG Micro-B connector. Thus it can connect e.g. HDDs, memory sticks with standard USB port to mobile phones, smart phones, tablet PCs etc. with OTG support. The OTG function enables a direct data transfer between mobile device and the USB device, without connection to a computer.