If the PC cannot detect the device, try to plug it in and out one more time.
Then,
if you use the old software, Ignis Utility 1: go to “Settings” and choose the iPixel 32Tech 3.0.6. You will see it in the list.
If you use the new software, Ignis Utility 2: click the SCAN button in the right side of the screen. You will see the poi in device list automatically. In the right top corner.
When the devise is 100% charged and turned off, the Software may not detect it. Turn on the device and click SCAN button.