If the USB ports of your system remain powered after shutdown, follow the suggestions provided below. Before you proceed, turn off the main power or disconnect the charger (if you are a laptop user).

In this scenario, if a user shutdown Windows while the USB printer is connected or directly disconnects the printer, then it will not be available in the list of printer ports when reconnected or when ...

I won these... odd rotating emergency lights that run off a USB cable. Like construction orange lights you'd see on the top of a truck in a construction site. Sadly, they are cheap-assed promo things ...