Did I kill my ESP8266? So I've been playing with the esp8266 controller lately and today my Usb Host Mini came in that I wanted to connect. So for this I followed the following tutorial https://www.hackster.io/139994/plug-any-usb-device-on-an-esp8266-e0ca8a 

The only thing is that I didn't do the following, because I wanted to see that it actually wouldn't work without damaging the Usb Host Mini.



Now I am wondering, because I didn't do that, and just went on with the wiring, did I actually kill my ESP8266 now? Whenever I remove all the wires, and just connect the ESP8266 to my computer, it just won't show up in the ports.

If I did kill it, what did I actually do here? Did I allow 5V to run through the board and did I fry it that way? If I would've actually made the cut shown above, would it have lived? (Because I think what the cut does, is it stops the 5V from going through the circuit.)
Well if it doesn't work then it doesn't work so a safe bet is that chip is damaged.
I found this document. It states:

VBUS pad and jumber can be used to provide 5V to VBUS. By default VBUS is connected to 3.3V; certain USB devices may have issue with
this.

So I deduce that this is connected directly to 3.3V rail of the chip. Providing 5V without opening the jumper (cutting the trace) is the same as putting 5V at the 3.3V pin.

3.3V. Power pin of the shield. Do not supply 5V to this pin - MAX3421E won't be able to detect devices on VBUS and may also be
damaged!

Apparently the &quot;proper&quot; way of doing things is to actually unsolder that jumper or cut the trace.
Sorry.