This four pack comes in handy. I had a car charger that had the old style Android charging port and this adapted it for the C type that my current phones uses. I hook the chain to my charger cord and when my granddaughter rides with me with her older phone, she can disengage the adapter/dongle and charge her phone as well.
I carry one with me for work to adapt the chargers there and I have one at home to use on my long USB cord for the computer. Very pleased with this purchase