When Cell Alpha wants to tell you something, it uses light and sounds. Here's what the light patterns mean:

Status indicators

Powered on and starting up

After Cell Alpha is plugged in, the light turns on and then turns off when the Cell is ready.

Ready to set up

When a Cell Alpha still needs to be set up, it pulses its light and makes a sound.

Ready to play

When the light fades off, Cell Alpha is ready to play.

If you're looking for info on light patterns during a factory reset, see this article.