Mivi 2 port WC231 wall charger has a total output current of 3.1 Amps at 5 Volts.
Mivi charger has a smart IC so it can output up to 2.1 Amps in one port and 1 Amps in the other port. Any of the two ports can output up to 2.1A. There is not dedicated port for 2.1A or 1.0A
Click here to see detailed explanation of the the smart charge technology of Mivi WC231 wall charger