The small part does what it should. Through the various articles, it is suitable for a variety of devices. When changing definitely pay attention to the correct polarity and voltage setting - else is running in no time a device zerbritzelt (the polarity is usually yes the device to be supplied can be seen). And that you should take seriously. This of course applies to all devices of this type and is therefore not a disadvantage. Just be aware halt. ;-)
There's just a very universal, handy device. I am very pleased.
