Note: Make sure you plugged in the InfinitiKloud flash drive into your phone. All data will be stored in it after backed up.
Drag your phone to the InfinitiKloud Storage icon
Select extension file types and choose where you want to back up. (This step will be the same with InfinitiKloud Internal Storage.)
Choose Where you want to back up.
Drag your phone to InfinitiKloud Storage screen
Select the extension file types screen