Categories
Ask Electrical Engineering Engineering

My usb ports outputs different voltages

I have made circuit that runs on USB. however, when i plugged into front panel of my pc or raspberry pi, it only gets around 3.3v, but when i plugged it into back of my pc, it gets 5v as intended. Shouldn’t all USB output same voltage? I have tried both USB 3.0 and 2.0, […]