The smaller charging port, what do I need to use this to charge my phone?

The smaller charge port is a USB type C connector. This connector is functionally the same as a USB 3.0 connector but the smaller size makes it a better fit for mobile electronic devices. If you want to use the USB type C connector, you will have to buy a charging cord for your phone that uses the smaller type C connector. You can use a standard charging cable with a normal USB 3.0 or 2.0 connector since this charging brick features both types of connection.