I have a USB hub that presumably can be powered by the host or with an external power source. When I connect the hub to an external power source with R-Pi connected as the host, the R-Pi powers on(no power cable attached to the pi). The hub is powering the pi through the R-Pis USB host port.
The hub is super simple. There are barely any components on the board. Just an LED.
Is this a bad thing? Will this damage my pi? If not, should I leave the micro-USB power cord disconnected(i was planning on powering the pi from that same hub). My pi hasn't blown up yet so it can't be super bad.
Hub is this here
Sorry, available only in ridiculous languages.