Just to remark on another review, the on/off switch does not control the fan. The fan stays on whenever the unit is plugged in. The switch only controls the blue light.
I have made an adjustment in my charging center to get the switch to control both the light and the fan.
In order to do this you must:
1) Remove the sticky feet and the 4 screws underneath them
2) Remove the circuit board (2 screws) that the fan wires goto.
3) Unsolder the fans black wire (+) from the bottom of the curcuit board
4) Solder the fans black wire to the on off switch where the red wires from the blue light are already soldered.
5) re-screw the circuit board
6) rescrew the 4 screws under the feet
7) Put back on the sticky feet.
Now the on/off switch will control both the fan and the blue light.
I rated this an overall rating of 3 because this is a stupid design and the on/off switch should have controlled both without me having to modify it.
Doing this modification was simple.
I am not a great solderer so was worried at first, but when I took it apart I saw how easy it would be.
The modification took less then 10 minutes and could be done easily by anyone.
If this modification was done by the factory, I would have given this unit a 5 star review, but since I had to mod it, I am giving it a 3.