power/comms plug?

[admin]

i just pushed a new version of the configuration tool (the first link) - i believe it should automatically update in Chrome, but you can also try to remove it and install it again. it should be live in 1-2 hours.
It should be version 8.2

here you can type your serial port
/dev/ttyUSB0
in the input field on the bottom and press Send
this will simulate that the device has connected
then you can try to send command

info

and see if there will be some reply