Every unit is given a unique "name" or "number" designation in brackets.
This can be changed /amended if you so wish.
Below, is an example list of some "default" names given to some network players:
If you want to change or edit the name of your unit:
Go to Settings in the StreamMagic app and at the very top you will see "Device Name" (in this case we are using an Evo 150)
If you tap on "Device Name", then you can change the name, and hit "DONE". (See picture below)