Power supply to me is the same thing as power brick, had tech support not even now what a Power supply is from my ISP, kept referring as power cable and im like "no those are different things" and she was like " like for your phone and technically yes a power brick for your phone is like PSU and your USB cable is what the power travels on, im just WOWed on now a person regardless of gender be in a tech support position and not know what a PSU is or Power Supply Unit just PSU is faster to type, id figured a tech support would know more terminology on tech stuff that going thru their software for troubleshooting