If you install this app, you can see your connected USB device info from this app.
Such as USB Memory, Mouse, Keyboard, LAN(Ethernet) gender, Etc...
When you connect USB device during this app running, maybe you can see it's info. or if you cannot see infos, open the side menu and select one of the device list.
And when infos are showing, and if you click info items, you can copy values to the clipboard.
But if your Android version lower than Marshmallow(6.0), some info will not showing.