10-04-2019 04:35 PM
There are two ports on the side of your GoPro 4, a micro HDMI and a Mini B USB port. Technically it's a USB 2.0 Cable, Type A to Mini 5-Pin Type B. You will also need a 5V 1Amp charger for optimum charging. Do not use a PC or the USB port on a monitor to charge as this may take longer or in some cases not charge at all.
I have had 3 x GoPro Hero 4 Blacks and currently am using 2 in my current productions, they are charged with a Mini B USB cable.