Interestingly, there is no USB-B host port. The USB-B connector is the receptor port on the USB device you are connecting to ...

There are a multitude of colors that your USB ports may come in, and they all have a specific meanings, with Yellow hinting ...

A device that transfers power to smartphones, tablets and myriad portable devices. USB chargers plug into an AC outlet and provide a USB Type A or Type C socket to cable DC power to the device.