Recommended
Horrific USB power supply fault. (Electrocution risk.)
Why people recommend it
A teardown of a dangerous cheap USB charger, cited whenever someone asks why bargain mains adapters are worth avoiding.
Watch for: An example of missing isolation, not a buying guide
In their words
See for example this teardown of a fake Apple charger, or this teardown of a USB charger (that is actually putting mains on the USB ports!)
marcelm on electronics.stackexchange.com, Sept 2017. CC BY-SA.
