charging the dongle?
the dongle takes the power from the console, so hence the part where it says make sure your console is fully or nearly fully charged.
once you install autorcm your console will not boot unless the dongle is inserted.
pressing and holding the power button will do nothing, well done you have instructed your console to turn on, then turn straight off again.
people really need to read the guide before doing things, its all explained how to use and is very simple to use, id say n00b friendly but then god makes better n00bs.
installation steps:
1) make sure console is fully charged or nearly fully charged and powered off.
2) remove right joy con and insert jig
3) download latest boot.dat from the website and copy to root of sd card (formatted as EXFAT)
4) insert sd card into console
5) insert usb dongle
6) press power button and press vol + and keep vol + held down
7) sx menu will load
8) install auto rcm if you dont want to keep using the jig everytime
9) install sx cfw
10) reboot console
11) have wifi enabled and go to album then activate license
each time you power down your console you will need to have the dongle inserted each time you power the console on, you dont need to use the jig or keep hold of vol + button.
the usb port on the dongle will likely be a means to connect to a PC if needed to update it at a later date, it does not function as a means to charge the dongle or console.
it never states in the guide to connect the dongle and charge it, those people who then go connecting it to a direct power source then are epic n00bs, you run the risk of sending shit loads of power through the dongle and cause damage, it does not contain a battery so why on earth would you think it needs to be charged.... what is there to even charge, just a nice massive voltage sent surging through it and likely blow its capacitors.
the light on the dongle is a means to inform the user what battery power is left in the console, it will light blue to say its ok, green to say it has charge, as charge on the console depletes the colour of the dongle light will go to a yellow colour.