The ADB android connection on the profiler is a connection that goes through the usb into the device instead of the network. It's different from the other connections due to its IP, which is 127.0.0.1.

However, if you start up the editor with the android platform as the default, you will not see this connection as available until you switch to another platform and then switch back to android.

To reproduce:
1. Open a project that has android platform already selected.
2. Open the profiler
3. Select the dropdown list of available devices/connections. Notice that ADB@ 127.0.0.1:34999 is not available.
4. Switch to any other platform
5. Switch back to android
6. Repeat steps 2-3 - notice that ADB@ 127.0.0.1:34999 is now available.