UNITEK Portable Power Expansion for Apple MacBook Pro. 1x USB-C 45W PD, 2x USB 2.4A Ports, 1x QC 3.0 Port. Built-in Over Current, Over Voltage, & Short Circuit Protection 1x USB-C charging port with Power Delivery 2.0 technology, maximum power output up to 15V/3A 45W 1x USB-A charging port with Qualcomm Quick Charge 3.0, which allows certain Qualcomm Snapdragon based devices charge up to 4 times faster than devices that use conventional charging methods. 2x USB-A charging port with BC1.2 technology, power output up to 2.4A.