I see nothing worrying here, this is pretty standard to me. You have a single 15A input and multiple 15A output, but you cannot use all the outputs at 15A at th

I see nothing worrying here, this is pretty standard to me. You have a single 15A input and multiple 15A output, but you cannot use all the outputs at 15A at the same time. As long as you use it on regular domestic outlets you will be limited by the 15A of your breaker anyway. This is the same as all the USB hubs chargers. They often have 5 outputs rated 2A each, but the whole hub limits you to 2A total.