This USB-OTG cable is well suited for tablets because it allows them to connect various USB devices usually dedicated to PC such as Hub, USB key, your HD, Keyboard, Mouse, Memory Card ... Please note that the mini USB female part can be connected to 5V power cable but only provides power to the USB devices connected downstream on the female USB connector. What is required when connecting a hard drive. The tablet may in no circumstances be supplied in this configuration. When the USB-OTG cable is connected, must be supplied by another input (eg, use a POGO cable for Nexus 10). Personally, I was led to write to the seller because as I thought I could power the tablet with the mini USB input socket, I thought the cable was a default. The seller told me very quickly provided the explanations and I am perfectly accommodated the response. Good quality product that deserves more details before purchasing.