The ports of the Hoco J154A 20000mAh power bank are located on the top of the device, consisting of one USB-C and two USB-A ports. The USB-C port serves both input and output functions, meaning it can be used to charge the power bank as well as other devices and supports PD 20W fast charging technology. The two USB-A ports are designated for output, providing 22.5W fast charging and QC 3.0 support. This configuration allows several devices to be powered safely and quickly at the same time.