The non-Qi Omni20 has exactly the same appearance as the upgrade Qi-Omni20, which makes it difficult to distinguish between the two versions. However, you can still tell if your Omni20 is equipped with Qi wireless by following these steps:
1. Press the USB button to turn OFF the USB output.
2. Press the USB button to turn ON the USB output, wait 5 seconds and you should see the Qi wireless icon flash 3 times on the screen.