I wouldn't advise connecting a dongle to a Power outlet unless it's recommended or you're instructed to do so. The Digisol dongles are used for data communication and you need to connect them to a USB port on your laptop or PC. In no way you should connect those to power outlets.
As you can see below in the picture, this one requires external power through a wall outlet with USB and it should be used with a power transformer that delivers the voltage and indicated amperage.
