This is what your product should look like and the diagram below shows the different buttons/ports and what they are for -

1.            LCD Display
2.            Power button
3.            ON/OFF Switch
4.            Micro/USB input socket for recharging
5.            USB port - 5V-2,1A
6.            USB port - 5V-1A
7.            Output socket for Smart cable
8.            Battery clamps with Smart cable