@Stwert
Thx to sykodad I’m now streaming from my NAS to my RPi B+ and iqAUDIO DAC+ wirelessly with an Edimax dongle.
Re yr voltage question – have read 4.75 to 5.25 seems to be the range – you are inside this assuming you measured it with the Edimax working (blue light flashing).
My experience is that the Edimax does take time to come up after a reboot – I watch for the flashing blue light.
Immediately after bringing up the UI, I go to Networks and wlan0 has a red X so I hit Refresh Interfaces and a green tick soon appears. Like you I’m using static IP address for wireless when I first set it up with my wireless password.
Once the green tick appears, click on it to get yr SSID and IP address displayed.
As an aside – I use netscan (free) to scan my network for the sometimes elusive RUNEAUDIO
If you have both ethernet & wireless connections, it will show both.
Hope this helps